Upgraded from 2.15 aaaaall the way to 2.5 yesterday and could not be happier, I like the way ikko is balanced now, I no longer incite revolts that win every time, it adds to the challenge.
I did run into a small problem, the increased Ikko resistance to invaders is actually a disadvantage, an enemy army took one of my cities, with only 4 units left, the people revolted and threw them out, and I was no facing an almost full stack of enraged rebels instead of a couple basic infantry units.
so is there some way to make the rebelion an Ikko one?