Like your diplomacy ideas. Just have a question about War.
At war you get +2 Mil, -2 Civil Production
But in all my games it's not unusual, in fact it's the most regular scenarion, that I'm at war with some civs at the other side of the globe.
I just leave them alone, the peaceful builder type I am. I only think about going into action if there continual suicide invasions bore me and I want to stop them.
So what makes the game think I am in an all out war? I don't want to get a -2 Production cause some unfriendly 'neighbour' that can hardly reach me wants to kill me.
I think that AI civs also need a reputation.
Cause it's unlogic that the senate always asks for peace even if that same civ attacked you several times.
So I think the worse a civ's reputation, the more likely it should be that the senate allows military action.