Not once was I able to make another empire a vassal or tributary through diplomacy. Edit: Vassal claims on other empires in war should be granted to the overlord and the overlord should decide whether they deserve th e systems at the end of the war. Suppress those silly Xeno's but only for when playing tall. Stellaris lacks the broad spectrum of victory conditions which could recognise the validity of the many different ways to play the game. They do, however, behave pretty similar to the normal empires, which is what I consider to be AI part (scrips that govern priorities). Vassal vs. They pay you tribute and that's it. Nice. Their trust increases overtime and when they become lawful you don’t have to be anxious about it any more. Both work a bit differently. I hope this is fixed because the potential for these systems is great!Move all organics to their own planet, you can create a vassal when you're at peace. the fed will break eventually as the other members oppose this. You'll basically take colonies and upon ending the war, they turn into a new empire matching your empire ethics. Was trying an idea the other day and I made my vassal contracts 15% basic resources and 15% research to me. 5% increase in trade output back to you. Rinse and repeat and you'll end up with a bunch of hegemony members with high fleet contribution but also the AI bonuses to economy. Prospectorium advantage is that they will get bonus on basic, advance and strategic rerources, has chance to find deposit in space and will never be downgrade to protectorate but get nerf on science production. The only other unique benefits are the +5-15% resources from jobs for non-President members and the diplomatic weight bonus at level 5. Both can net you additional territory if integrated but otherwise it's just what I listed above. g. Even before 3. in stellaris, tributaries are just a different type of vassal that pays you resources but doesn't follow you into your wars. Except maybe espionage that causes a political incident. Created Jul 31, 2015. 3. ; About Stellaris Wiki; Mobile view vassals are better than having tributaries or trying to conquer one planet at a time because they can be integrated into you country for some cost in influence and will cost far less to demand than the sum of all of their planets added together. x. Like Vassal 1 focuses all its invention on making a laser which can heat. ago. 8. Please help improve this article by adding citations to reliable sources. Stellaris vassal vs tribute State subordinate to another state This article needs additional citations for verification. I am looking for something that lets a nation be your subject and grant you their dev for GC, but simultaneously have the freedom to have alliances. You get 1 influence point for each protectorate you have established. This pairs quite. My question is why did they change without any warning or any sort of reasoning given, except the notification that they'd been changed. So if a xenophile has a xenophobe vassal, he can grant his xenophobe vassal "cleanse planet" wargoals. Nov 21, 2023Vassal or tributary? SirAlexius Dec 22, 2018 Jump to latest Follow Reply Is it better to vassalize other empires or make them tributaries?Tributaries also seem to be of more use early, as the couple dozen energy/minerals still make a difference, while vassals are better lategame when they. GazOCee. If you want the extra resources from a vassal with none (or very little) of the headache that comes with loyalty management and specialization, and you don't plan on integrating them either, tributaries. 3. They are all extremely strong perks with them. Cult for easy edicts and feudal for the vassals. 806 14. No no it was the other way round. Please note these costs are over and above a base cost of 20 influence points. As well as encouraging the spectrum of playstyles Stellaris is otherwise. Provided, of course, you have enough influence to push it through. This is basically creating vassals, letting them grow pops for awhile, and then re-integrating them. 25 influence. Plus, you won’t be spending the next 50 odd years fixing 3 happiness issues and 4. Any one of the three get protection. 0 pop growth update some people have been "vassal farming". Vassal play is primarily aimed at Tall, and while it "needed" it, it doesn't make it any less limited in scope. I'm not sure what the problem is, but ive just conquered these guys as a vassal, then waited until i can change their contract, but i dont have the option to make them a rospectorium, or even a vassal in the first place. While the subordinate party is called a vassal, vassal state or tributary state, the dominant party is called a suzerain. To request an empire to become your vassal, first, you will need to contact them via the diplomacy screen. What I always do is to release 1 planet vassal, wait until trust build up a bit, then free the vassal, because they share ideology as me and are 1 planet and has trust bonus, they are usually weak enough to accept my re-subjugation of them as tributary. A place to share content, ask questions and/or talk about the 4X grand strategy game Stellaris by Paradox Development Studio. Method 3: Make a Sector a Vassal. Turns out I got 40 systems or so and 3 inhabited planets. Presets have a list of default terms, and can have. It was a tributary in a mercantile federation. Creating a Vassal Out of A Sector. I’m going to need more habitats. Get them to agree to it themselves, or force them to submit with a war. There are a few different ways to create vassals in the game. r/Stellaris. We would like to show you a description here but the site won’t allow us. Wars are how mid-game and end-game borders are usually drawn. Especially since the contribution is percentage based so you benefit from their AI bonuses. The +15% resources is a further bonus to your political power at level 5, and in the meantime it means you can get slightly more from vassals in taxes. Tributary is the same thing. But the tributaries keep rebelling and I need to fight wars of conquest and. Becoming Tributaries Instead of Normal Vassals is Very Frustrating Bankipriel Mar 29, 2023 Jump to latest Follow Reply It is very frustrating after. Now they have more diplomatic weight than they ever had, love me and helped me obliterate an empire. -100 for vassaling and -100 for something like war at itself. • 1 yr. So, after my first very successful game as an Inward Perfection empire, I played some Authoritarians in a crowded galaxy, and after carving off a roughly 'fair' slice of the pie (small empire, space-wise; I was stuck close to the core. g. Tributaries are mostly free, they can expand and do diplomacy but need to pay you a quarter of their income. I am wondering what the cause of that is and if there is anything I can do to. Release them, then declare a war to make them a tributary. Having a protectorate gives . 166. jbroege • 7 yr. 50% taxes on basics means the vassal makes 2x as many basics as they would otherwise. 5 influence. Actually, they can! Turning someone into a tributary makes them your subject, and hegemonies auto-include subjects as members. But they can reject renegotiations if they hate you and have the influence it is a pain just keep them loyal and they won't make you waste influence. Heck if they like you enough they may even be amicable to becoming a tributary. Currently bigger empires (ie conquest) is just stronger due to the fact that you can just increase your empire sprawl endlessly (ie no science loss from bigger empires) and the ai has weird ship designs and uses buildings suboptimally. Between a tributary and vassal, an empire will almost always want the. 3 came out I find it to be rather difficult to get either of those options. 10. The best way to play is to have as close to zero empire size whilst having the biggest science income. Midpoint between autonomous vassal and tributary. 7 to −3. Ive heard somewhere that if your vassals hate you, then they wont help you in anything. In Stellaris, becoming a vassal of a regular empire means gameover 99% of the time. Firstly you need to be a recognised power so you can puppet and not just make a tributary. Completely eliminating the distinction between the types I think would lead to less interesting gameplay, and make stuff like finding a primitive. 0 unless otherwise noted. Vassal gives you no resources but is very handy for research agreements without helping future enemies. So, for example, I could demand an empire become my vassal, have them refuse, and then choose to declare war on them to become a tributary or a vassal. They have internal autonomy with limited interference from their overlord. 0’s pop changes, with an empire growth slowdown as you conquered more pops, slows rather than increases your pop growth as occurred in 2. Improve your relationship a bit then release the vassal as a now friendly empire. A tributary gives you a portion of income. Vassal vs. Learn the pros and cons of tributary and vassal subjects in Stellaris, a strategy game where you build your empire and conquer the galaxy. Once it's explored, the two systems with an endpoint for the wormhole become adjacent from your fleet's perspective, so just. 8boy09. But yeah, the moment vassals get involved half the tree becomes utterly useless and the other half gets reduced in value. The first method involves going to war with a target empire. 1 Answer. Stellaris. If the tributary pays the tribute, trust increases slightly; if it refuses, trust falls significantly. ago. Neither. Originally posted by Revan Tair: Protectorate is way much better, than vassals. Third is that people will want a Bulwark, but probabably as a 1-planet minor vassal, in order to get significant starbase discounts (20%) that will also apply to planetary rings. The prospectorium isn't likely to default, the pops are producing more, and the contract will naturally go to. if you want their territory you vassalize, if you want their energy credits and very much dont want to annex them you go tributary. 2. Gift them minerals, energy and if required, food. And pacifists make the best Triburaries. Sheodoq • Synth • 6 yr. Not sure, they disappeared at some point Upload Attachment File(s) attachedI generally leave vassals as vassals unless I need the land or they are completely opposed to me. I was able to see them initially but at some point they disappeared. 2. Spend more time with them as a regular vassal and specialize them mid game if they are doing well. -25% minerals and energy to your vassal's fleet. submit or rebel), you're completely at the whim of what your vassal deems acceptable which is reflected in the acceptance value. There's no option for using favors to sway your way, no ultimatums (e. Stellaris Real-time strategy Strategy video game Gaming. Subjects were allowed in since that almost costs us a war when the AI did not send the fed fleet in time. Protectorates become vassals which are not that useful. To get the vassalize CB the overall relative power of your target has to be inferior / pathetic, not just fleet power. After that kick someones ass with a goal for liberating a "Rival" Tributary(Your ethos) or a vassal/protectorate/standart tributary and a "Federation" Tributary. This page was last edited on 7 June 2023, at 04:39. Toggle signatureI would use the Tributary option so much more often if it wasn't so inconvenient. I am looking for something that lets a nation be your subject and grant you their dev for GC, but simultaneously have the freedom to have alliances. A vassal has still some use, even if their military support is questionable, e. Reply reply more reply. If this isn't the case then something is missing. Then (to test) I let them both go. For all of you who cry that it takes 100 years to integrate a vassal let's look at the facts. Overlord will be focusing heavily on the subject of. stigmund77 First Lieutenant. There is something to be said for 4X-style victory conditions, which usually allow for diplomatic, scientific, and cultural ways to win. Best. Sometimes, vassals are used to help manage large empires, though often suboptimally. Stellaris? Dumb as rocks. Seemose • 2 yr. A disloyal vassal won't follow your fleets around during wartime. You may decide to do this if; the size of your empire is becoming a bit difficult to manage or you have gained a sector too far. As vassal you get the "help", and part of the fleet power of an inefficient non-difficulty boosted AI. I don't play unmodded so I don't know if this is normal behavior, but it would be nice to see. It’s kinda pointless. They're a tributary. . A vassal also run the risk of a full diplomatic integration by their Overlord. 5. 3] This mod aims to improve the Domination tradition so that it is an appealing option at any stage of the game and also adds several new vassal and tributary types that are more evocative and useful to an overlord. Vassal & Tributary management / overlord's orders / united voting. You can't change it because they're not a vassal. watching the Overlord multiplayer stream (mostly Montu) and I was wondering what exactly the difference is between a tributary vs a standard vassal in the upcoming patch. Not being. Wars are how mid-game and end-game borders are usually drawn. 4, but the quick trust growth means you can turn them into a protectorate/vassal pretty quickly. Alpha Centauri Mods for stellaris: SMAC Factions converted to Stellaris ForumThread SMAC Factions in Stellaris - Steam Workshop link SMAC Symbols/ Flags - Steam. Prospectorium advantage is that they will get bonus on basic, advance and strategic rerources, has chance to find deposit in space and will never be downgrade to protectorate but get nerf on science production. All that said, Protectorates are by far the best subject type to stock up on, for that sweet +0. The issue is when I declared an expel branch war against them it didn't work. Copyright © 2016 Paradox Interactive AB. The use of vassal states continued. With the rework that means you can specialize your vassalsFor Stellaris 2. Name your federation Kow-Tow Federation(or something suitable) if you are a Celestial Empire or Tributary Gang if you are like me. And with federation DLC the hegemony makes vassals obsolete for puppet master style. So there is no reason to not integrate a vassal unless you are fine with having a worthless pile of pops on the map. How to make vassals/tributary. • 5 days ago. Exalted Domination – Vassals and Tributaries [3. Food is minimal, and getting tributary after tributary can cover your economy for the most part. You can let them be autonomous, but ultimate control of the sector still belongs to the player. Stellaris. From my understanding of unmodded ai: Does this action leave me open for. Make tributary is a war goal and diplomacy demand. I've seen threads saying they weren't all that good. See screenshots for new tradition effects. Also use the make tributary war goal and claim the systems with rare strategic resources like Dark matter, living metal and zro. They won’t agree. Making them exponentially stronger. These 2 are great as it forces an empire to be reliant on another vassal or their overlord to compensate what they lack, mmaking rebellion a risky business. I don't believe that a vassal/tributary can have subjugates themselves so I. would like to know too!! #1. All that said, Protectorates are by far the best subject type to stock up on, for that sweet +0. Tribute is better for more powerful empires. A secret fealty vassal I just got started as a bulwark after being fully vassalized, but I'd rather have a regular vassal instead. Tributaries, unlike vassals, are semi-independent - they pay tribute to their overlord, but are otherwise left alone. Well it depends. This page was last edited on 7 June 2023, at 04:39. As far as I can tell, the only benefit you get from having vassals are: - You keep your Empire Sprawl down, keeping your research cheap so you can get up the tech tree faster. ago. It’s your overlords job to protect you so you don’t really lose out, protecting 1 vassal isn’t a huge problem for a overlord. ago. Open up the “Empires” tab, select the Empire you want to Vassalize, and click on the “Communicate” button. Since version 3. Edit: says cannot build more than one. bane_howlingmoon Mar 18, 2018 @ 5:42am. Question about vassal criminal syndicate. Overlord aims to offer more control over your empires, both to let you shape them in more specific ways and also to generate more anecdotes when it all goes wrong. In essence, a Tributary is a more independent vassal that you cannot really control. Apparently one thing you can do is spam the renegotiation proposal until they run out of influence needed to reject it, but that relies on you having more influence than them to spend doing it. Edit: As another commenter mentioned, you can also declare a subjugation war on the overlord and gain everybody. Protectorate an uplifted pre-FTL species for an increase in monthly influence and a potentially powerful ally at the end of it all, or Vassalise an empire for some. Tributary will really boost your economy, so you can put out a lot more research and alloys and have less of your pops mining and energy production. The only way to instruct a science vessel to explore an unstabilised wormhole is via the right click menu. • 3 days ago. Conquering directly just gives you the planets and populations directly, and will generally be strongest. NumberIine. 1; 1; Reactions: Reply. Just turn all your non border and core systems into vassals and take the reduced research and unity costs. 2x probably). I hope this is fixed because the potential for these systems is great!The vassal can immediately surrender, but the vassal suffers more ethics pressure from you (and ethics should influence how long it takes to integrate a vassal). 'War score' at the beginning of war says it's -200. The general rule of thumb i use regarding subjects, if the naval capacity is equivelant or higher, make it a vassal. Correction: Only voluntary protectorates give you influence. I just technologically enlightened two races, immediately making them vassals. < >The broken part is that you can get any contract, even one with a 75% tax on everything. Is something wrong with getting Ai to become vassal/tributary/other ? Question I've just had a game where I could just demand other empires to become my vassal and it felt really really Easy. I play tall and use tributaries. I think you need to have unrestricted wars policy to use it though. A subject is a country which is subordinate to another country (overlord). Vassal is mostly for. And for the stronger empire, you could benefit from having weak allies, but still stronger-than-vassal allies to aid you. Integrating or changing their subject type would definitely be the best move if you're trying to get more out of them. The big barrier that a lot of people on here seem to have is not knowing about the vassal/tributary casus. ago. In the second game I tried to tributary the aliens. Legacy Wikis. The new vassal system lets you specialise subject empires, which then develop handy traits as they level up within the greater empire they're a part of, making that 30% research tax an easy pill. A secret fealty vassal I just got started as a bulwark after being fully vassalized, but I'd rather have a regular vassal instead. A vassal state is any state that has a mutual obligation to a superior state or empire, in a status similar to that of a vassal in the feudal system in medieval Europe. So Materialist feudal playthroughs can be crazy good. 4 Cepheus update. . Vassals are even worse on higher difficulties, since no matter. vassal liberation/secret fealty wars are radically stacked in favor of the overlord. There should be a tab that says something like:"Demand tribute" or "Demand subjugation". 5 loyalty (0. Unregulated means no change, controlled gives your vassal pops a push towards your ethics (like that one galactic community proposal) but your vassal dislikes it, puppet gives a stronger push and allows the overlord to buy the "embrace faction" option for the vassal. If you’re a vassal then theres good news and bad news. Next to the “Demand Vassalization” button will either be a green tick or a red cross. I dunno man, but it seems OP. Some rulers should have special mandates / agendas in vassal nations "Independence"(Mandate) "Secure Sovereignty"(Agenda) - which gives their empire a loyalty debuff vs the overlord if they get elected. Rodmar18 General. The liberate does the truce thing, but if you're close enough and big enough, and make them love you enough, you can get them to become your vassal without a fight. That said, yes as they currently stand Vassals are incredibly powerful. I think it's common knowledge by now that AI vassal on higher difficulties is basically useless other than neutering a potential rival and prepping…Puppet is a modern term, and usually is just a state with teh same goverment as yours, and that is completly complient to you vassal is a medieval term and usually allows alot of autonomy, depending on the type of vassal it may be, some consider a tributary as a vassal, and some other consider the King of England (also the duke of. Protectorates get an 80% tech discount helping them catch up. Click that, send, wait till they deny your offer and then you get the belli. During the 18th century, the Ottoman Empire controlled many vassal and tributary states such as the principalities of Wallachia and Moldavia, or. GazOCee. ago. You basically become…In fact, they managed to wallop the Tuxkans so hard in the last war, not only did they convert a third of the former Tuxkan territory into a friendly vassal state (the Imperium of Berni, in orange-green), but they did so while simultaneously occupying over half the territory of the Holy Adeex Order on their other flank, which used to be allied. For instance, one of my allies wanted to go to war to make a tributary of another empire. If you have 250K strong total, let them possess a 50K fleet and then they'll help you in wars. It is far easier and faster than trying to conquer individual planets. The extra credits really make that much of a difference. A place to share content, ask questions and/or talk about the 4X grand strategy game Stellaris by Paradox Development Studio. Tributary and Vassalize: If you have at least one ally with differing ethics, you can give them war goals that conform to their ethics even if they differ from your own. r/Stellaris. Vassal specialist types are suddenly not showing in either the propose subjugation or agreement negotiations menu. 4 we had those two vastly different types of subjugation: Vassals are diplomatically tied to their overlord, they pay a small tribute and get some benefits. As Tributary you get a small part of their resources. 2. as a trading partner or a buffer zone. May 11, 2016. As such, tributaries are better than subsidiaries, so do not pick megacorp for subsidiaries. Subject contracts start with a “preset”. To see what we can do to make your empire bigger and stronger than ever before,. You can vassalize by liberating a group of systems, then vassalizing the resulting empire formed of those systems. Even before 3. Once it's explored, the two systems with an endpoint for the wormhole become adjacent from your fleet's perspective, so just. The integration only took 22 months. Legacy Wikis. Even better if you're playing on a high enough difficulty where they get bonuses while being vassals. You can now invite it to a federation, form a research agreement, turn it into a tributary, or whatever you want. Atunomous vassal gives you freedom to wage your own wars, but not to make. For a regular empire, it can happen the other way too -- you start with a Tributary, then it auto-switches to a Protectorate, and then later it auto-switches to a Vassal -- losing your Tributary resource contract entirely, you have to spend Influence to re-negotiate, and whatever you negotiate is thrown away if it swaps into Protectorate again. All subject types automatically join their. Best. This is just one component of this incredibly complex game; there’s plenty more to learn as you strive to conquer the galaxy. Protectorates become vassals which are not that useful. With the "Taxation of Subjects" policies, you can turn your Vassals and Protectorates into Tributary Vassals and Tributary Protectorates, respectively. The second vassal everyone will want is the Scholarium, who provides a significant bonus to research potential and valuable science tribute. GA with scaling is pretty fun. Now I'm paying them 30% of my resources putting me in the negative. Thanks beta testers, now I can wait for a sale. Feudal is also the only way I know thus far that makes a 1 system play through possible. I usually just change their ideologies first, then make them a vassal through diplomacy or another war. -must first ask in diplomacy screen, then you have 1 year to declare war. Authors description: Exalted Domination – Vassals And Tributaries. . Tributary will really boost your economy, so you can put out a lot more research and alloys and have less of your pops mining and energy production. Maybe in multiplayer you can make it work, but in singleplayer you're wasting your time. it. When an AI empire is about to declare war it will first. 7 to −3. 0 unless otherwise noted. A place to share content, ask questions and/or talk about the 4X grand strategy game Stellaris by Paradox Development Studio. No big deal, in a current game as evangelizing zealots I’ve got 3 vassals: An ex-primitive empire I enlightened and let occupy the entire far north, a xeno separatist of said ex-primitives that I forcibly subjugated during a galactic war shortly after they gained their independence, and a same-species, two-system fringe sector I made a vassal. If you declare war, they automatically declare war on the same people, etc. 3. To Integrate Vassal or to Not Integrate Vassal? King of Malta. Involuntary protectorates (those forced on by war, or those forced on uplifted species) will not give you +1 influence. On higher difficulty settings the Federation is absolutely the way to go if you want this style of gameplay. In Stellaris we live in civilized times where barbarians kidnap and enslave people, necrophages transform people into more necrophages, and purifiers exterminate people by millions. make every three planets above my cap into a new vassal. < >Stellaris vassal or tributary book 3 summary guide Will normal vassals still be in the game? It can give you a head start in terms of capacity to quickly expand your empire into far and virgin zones. An empire can become a subject willingly via diplomacy; the acceptance depends on a number of. Legacy Wikis. In cases where the vassal in question is large and rebellious, integration and re-releasing might be prudent. Stellaris v3 version available here! This mod aims to improve the Domination tradition so that it is an appealing option at any stage of the game and also adds several new vassal and tributary types that are more evocative and useful to an overlord. Scholarium should get some better bonuses to make them actually the science vassal to play as, as well as the subject science one to get. Stellaris. ago. Then again I'm running Glavious AI which doesn't seem to improve the AI that much (granted, there are 2 "equivalent" normal empires in 2400 and one of my federation members just quit the. They are probably more useful in one of the next patches due to tributary states and maybe some other changes (which is currently missing compared to EU4). All Discussions. Subscribe to downloadVassals and Tributaries - Exalted Domination [3. Steps to reproduce the issue. See screenshots for new tradition effects. Not only should it be possible to transform a vassal into a tributary, but the reverse should be true too, provided the overlord is strong enough and relations good enough. If it’s a tick, you. r/Stellaris • Frustrating Vassal mechanics - Even with maximum loyalty, the most favourable terms possible and overwhelming fleet power compared to them: It's impossible to contract even the smallest payment or to specialise their vassal type. Now. Possibly replaced by their overlord, or the galactic empire will just be dissolved (perhaps even have some kind of event where people panic because the protector-turned-ruler just got punted, that'd be pretty frightening)Yes but, They still count as a subject so unity from the tradition, and give . You can easily rename your capital system, and so, you can easily rename your subjects. The enemies you fight at that point where you would actually think of using AI help would obliterate AI ships so it's best to have them fund you. Stellaris 50473 Bug Reports 30888 Suggestions 19151 Tech Support 2898 Multiplayer 377 User Mods 4631 Stellaris AAR (After Action Reports) Console edition 1216. However, vassals do drain your influence and cost even more to integrate. #2. A vassal state is any state that has a mutual obligation to a superior state or empire, in a status similar to that of a vassal in the feudal system in medieval Europe. Since you can do contract negotiations, there shouldn't be any difference right because you can just set all the categories to the same setting right? Subscribe to downloadVassals and Tributaries - Exalted Domination [2. However, it pays a substantial amount of tribute to its overlord in exchange for protection. Presets have a list of default terms, and can have. Even if you change 0 infrastructure and pops, re-releasing them will give them all your traditions and techs, and re-set the ascension perks so they can choose. ways to get a vassal. You can only subjugate by force if the empire is weaker than you since overlord. Help with Vassals. Actually, they can! Turning someone into a tributary makes them your subject, and hegemonies auto-include subjects as members. AND you can integrate protectorates into your empire. Just librated a planet in a defensive war and now have the choice to vassalise them or form a federation. It's a per-month drain, not an. Stellaris Military system needs a rework to make Warfare fun in all stages and with all power discrepancy. Instead of types of subjects as vassals vs tributaries vs subsidiaries, subjects are now based on a vassal contract system ala Crusader Kings 3, where the Vassal and Overlord can negotiate a contract in terms of both tribute and privileges for the vassal, including not just diplomatic privileges but also even resource subsidies, where the. Most importantly, some empires don't want to be a certain kinds of vassal types. 2. What does the L in L-Gate stand for? (Correct answers only) 167. Thread starter Seridor; Start date May 8,. And for the stronger empire, you could benefit from having weak allies, but still stronger-than-vassal allies to aid you. Frustrating Vassal mechanics - Even with maximum loyalty, the most favourable terms possible and overwhelming fleet power compared to them: It's impossible to contract even the smallest payment or to specialise their vassal type. Maybe have it affect factions. Plus, if you've gotten said protectorate by doing something like. Two ways to get a vassal. Galactic Surveyors. Without it all vassals are good for are buffer states. A 3 planet tributary can give you more than 10 of each. the game seems to make the war to expel branches of there overlord, which is A) pointless as they aren't a megacorp and B) very. It's sorta like the political version of slaves.