Diplomacy
1. It would be awesome if the portraits showed some emotion depending on their relation to you or their current status in the game. i.e. anger/joy depending on relations or despair if they are close to losing. This ofcourse would be pretty hard to do convincincly
I think they did it quite well in GC2. Of course, it is a bit early to have implemented it in GC3. I was waiting for a later build to see if they were going to do it again.