I think the faces are fine. At least they represent more than the emissaries in Civ2. I do hope you can turn them off though, if you have a slow computer.
Hey, if this is all true, then the diplomacy is going to be amazing! We could swindle weaker civs much more Machiavellily.
One question: What role does patience play in Civ3's diplomacy?
In civ2, I accidentally click on something, so I say "Never mind", and they tell me to stop wasting their time!