Usually if there is a civ alive, a city with its majority culture will simply defect to it
Oooooh so that's why revolting Civ were sometime creating their own / forming a barbarian city, and some other time joining another already existing Civ !
I was a bit confused about that, and was thinking that it was two different kind of thing (one being the Separatism, and the other one being the vanilla "a city has too many culture from X so it join their empire instead").
Glad to hear it works, as I never saw it happen in-game yet besides some specifically crafted testing scenarios.
So far, working well and makes for a really interesting twist of events !
I wonder if it'd be practical to, instead of a hard rule that cities under 5 pop can't revolt, have the separatism from population scale from -100 at pop 1 ("there aren't enough of us to take them on") to 0 at pop 4 and then continue at the current rate past pop 4. That way it's more ingrained in the system and gradually changes over time, allowing cities with high amounts of culture to potentially require some mitigation even at small pops, and have the risk grow as the city grows.
Having a bonus/malus graduating changing from pop 1 to 4-5 would have, at least for me, the main advantage of explaining how it works. If I didn't came on this forum, I would never have known that city under 5 can't revolt.
But I'm not the more diligent reader of the Civlopedia, so perhaps it's written somewhere and I'm just a bad player
But I agree that the numbers could use some tweaking. So far I never had to bother about Separatism anywhere in my empire, except for the two cities that were settled late classical and insta-went 100% foreign culture because they were close to another Civ's borders. Having another religion or number of pop didn't seems to do anything, at least not enough to create a threat even to my small (4-ish) garnisons.
While writing that, I realized that the problem is maybe not about the Separatism, but about the Culture itself... It doesn't make much sense that a group of Settlers, born and raised in the Nile Valley, instantly feels that they are now West African just because they wandered a little off the map. A few years down the road, if nothing is done to maintain Egyptian Culture in that city, I can see why they would start to think of themself as part of another, closer Civ... But the very same day that settle down ?
Could there be something to be made so that a newly settled City start with 100% culture from it's own Civ ? Or would that break something game-play wise ?