Some thoughts regarding late game with the latest version. Playing Venice on a huge map, emperor, epic game, 22 civs.
- Decolonization (world congress proposal) is actually helpful for the player going for diplomatic victory. I (Venice, statecraft, freedom) used to have a good grip on 25/33% of the city states with a lot of back and forth and contested city states. Inca (my strongest opponent DC wise) managed to get decolonization passed and in the next 10 turns, without even trying, I am allied with more than 2/3rd of the city states and the AI can't seem to compete anymore. It gave me something like 10/15 votes while he lost several.
- AI is quite good at war but still a bit shy when attacking cities with infantry, sometimes just sitting around a crippled city for several turn without really doing anything useful.
- There was two main landmasses, I dominated mine, the other one (the widest) saw the rise of two very strong domination civs: Zulu and Songhai. At some point, Shaka massed his whole army on the far north of the continent to siege an irrelevant one city Byzantium nestled between mountains (see screenshots). He was somehow unable to take the very low HP city (because he didn't attack with his infantry I'd guess, and he didn't bring his artillery in range). In the meanwhile, Songhai is trouncing him on his southern border (gaining more than 5 cities, some in the very heartland of Zulu empire, see screenshot) and Zulu just doesn't move back south. The funny part is that at some point Byzantium capitulates to Songhai, and then only Shaka started moving back south and defending himself. If it's a "bug" I can submit it on Github I have a save.
- When playing a non domination victory, you still might want (for fun, roleplay or even to just actually try to win) to intervene in others wars to prevent a domination Civ to run away. But at that stage of the game, since you are ahead on another victory path (here DV), the AIs usually distrust/hate you and it's impossible/very hard to get an open border treaty/defensive pact thus making it impossible/very hard to try to help them. In that case, still as Venice, I wanted to fight back Songhai who was running away. Having the strongest fleet of the game I wanted to try to relieve the pressure on the Incan/French front of the war but the battlefield is too narrow and I can't maneuver effectively. So I can't help those two AI, or I would have to declare war to them, leading me to weakening them before I can safely reach Songhai's fleet (see screenshot). I don't know how it can be worked around. I am not pursuing a CV but I am accidentally culturally dominant with several civs so it would make sense that they don't open their borders (plus since I have troops nearby their borders they are more aggressive). A diplo option to offer to join a conflict (with open borders for the time of the war and any city you take is automatically liberated to the civ you're helping) would be cool but I don't know if it's doable at all.
- Otherwise the version is very good and satisfying to play. I especially like the rework of the recon line. It's very fun to play around a few of those units without feeling overpowered, it add a whole new layer of warfare to the mid/late-game.
- PS: the rework of the naval line is really great too, it makes the naval game much more engaging and interesting.