not talking about magical barriers, but simulating the reality of things getting harder to manage as they scale up. I think that'd benefit gameplay as well. In EU4, getting another PU, or more territory is always good, the only thing stopping the players are numbers like AE or governing capacity - but it's not actually hard to keep huge swaths of land together. In actual history all empires eventually overstretched and collapsed somewhat, but in the game that never really happens, except scripted disasters like the Ming collapse.It shouldnt be harder. It should stay equally hard. The difficulty for large Empires is to manevour large armies with a limited manpower-pool, which is the reason large Empires didnt scale with their size. You lost 10k troops in the americans as UK? Sucks to be you, you are not replacing them in America. You need to ship troops across the continent. However now you dont have enough troops elsewhere. That is what imo the game should be about.
Magical barriers are simply nonsense and dont add to the fun at all.
Wouldn't it benefit gameplay if the player had to actually make informed decisions about whether to get another PU or not? For example will this cause more trouble in the long term through uprisings, demand for privileges etc , or will the player benefit from the increase in power, as opposed to just checking whether there's a free diplo-slot.
One thing I hope for is subjects rising up more frequently. In EU4 with high liberty desire they just don't pay any money and don't help in war, but don't actively join the other side, or harm you actively in other ways. Sometimes some rival would support their independence, but I've never had an independence-war declared on me, it'd just be a little annoying having to deal with it.
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