Minor point, and I apologize if somebody has already brought it up: I think the Ustream vids show that city-state personalities aren't permanent.
We get a couple of chances to see lists of city-states in both games, and it looks like each one gets a personality tag (Friendly, Neutral, Hostile, or Irrational), but they don't match the list on Arioch's site. In particular, six minutes into the second video, we see that Geneva is (appropriately) Neutral, intead of the Irrational that we'd seen it as previously. For my money, the most likely explanation is that personalities are shuffled with each game.