So I installed "What would Ghandi do?" mod, it should remove AI happiness bonuses but give him better production, and it indeed seems to do so, I think it gives AI's some free Golden Ages and makes them more aggressive, so now it feels more like basic Civ5 but with all BNW improvements of course and better AI. No more free 30-cized cities for AI, everything is much more even and smooth. I played one game on low difficulty (Prince) to test it out and while it was easy to win I still got a few surprises.
I played Egypt, focused on building wonders and making tall empire. First turns I get rushed by barbarians and 5-6 Montezuma units, manage to kick them out by moving chariots around cities, but can't do anything else. Gathered some forces and backstabbed the prick, and it all went downhill as most civs on pangea started to denounce me, with exception of mongols who acted as warmongers themselves and already conquered a city state (!) and were kicking Poland ball around. The Poland ball seems was made of mithril as mongols were fighting poles for ~1500 years and still couldn't grab Warsaw because it was between mountains and the sea, only when mongols got planes things started to change a bit. Meanwhile I destroyed azteks and prepared to conquer Theodora who was the council leader and constantly annoyed me. So I captured her capital and prepared to sit around and play with culture, when she suddenly attacks me again "it is impossibru but i will fight u", and then BRAZILIAN SLAUGHTER who is ahead of me in tech and also has, just as me, modern artillery and better infantry attacks me. So I am almost in the middle of world war there, grab oil from city state and D-Day BRAZILIAN SLAUGHTER with panzers, foreign legions (what a cheating ability) and artillery. In the end me and mongols have half of pangea each although I lead. Mongols still couldn't capture Warsaw, btw, even with bombers and modern infantry. Game ends with my diplomatic victory.
Much fun almost like real Civ, just still have to move 20 units around and get constantly stuck between mountains and shit. Will try the mod on higher difficulties later.