Well, I've noticed that the AI is no longer hell-bent on raiding your territory, which is a welcome change. I remember having a full stack army outside of Norway, and Denmark made a runner with its four-troop stack, abandoning the city so that it could raid Sweden. The imperative to raid, raid, raid was paramount! No more. Now the AI seems to make sure that it can actually defend itself before launching suicide raid parties. I call that an improvement.