I tried out this mod as England on King difficulty, Fractal map. I have to say, I basically ran away with victory as of turn 75. It's now turn ~150 and the other Civs have hardly contributed a single district or Great Person point to challenge me, and no one has declared war on me either despite Tomyris, Barbarossa, and Gilgamesh being my closest neighbors. Is anyone else experiencing such a passive AI?
I did do one "bad" thing that might contribute to this though: I am playing on Standard map size, but with one fewer AI than standard (I didn't want to be so crowded in the early game). This might contribute to their lack of aggression... but still, I've gotten every single Great Person completely unopposed.
The combat AI of the Barbarians seems to have been greatly improved, so I think there's definitely some good stuff here. Do I have to bump up to Emperor to expect a challenge?
(as a sidenote: I will say that I did not bumble my way to this victory. I have an incredibly well stitched together grouping of six cities with a zillion internal trade routes (commerce, dockyards, industrial hubs. It's possible I just "beat" King and should have chosen a higher difficulty. I'm leading in everything except Religion, which I didn't even go for. Is the AI just scared of me?)