By far this is my favorite patch so far!
Though Defensive Pacts are still made quite as often, around turn 200 and the world is already spiraling into chaos, wars being fought everywhere.
AND, also the tactics AI improvement:
You can clearly see here that the Turks is sending everything they can in their merciless assault; almost no units sitting behind. Now, some people might say this is bad because if they get attacked in the opposite side they are totally defenseless. Yes, but AI actually needs this level of dedication to be able to take cities, because they are obviously no smarter than human players.
People, you gotta be prepared to protect your lands, the difference is easily felt
Oh ****.
Btw, this is on King difficulty.