Quote Originally Posted by Geoffrey S
Although to a limited extent that is possible (see Rome and the Carthaginians script) to apply that to the whole game with all the variables that entails would probably simply not be feasible.
Emphasis added by me. So here you are then. I'm no coder, but it appears to me that this sort of script is
1) Too restricted; a human could really play depending on it to work for him
2) Too complicated - it's not just time, but also common enemies, other AI enemies; progress, and balancing it all.
3) Not really needed: it doesn't prevent harm from being done on the AI's side, it merely reduces the problem for the human - plus I find that the AI generally does send diplomats, only when the situations is in Humans favour. You should use that to your benefit; that was what the ancients did, and expected too.
4) Not accurate: (partially) it was those on/ off wars that eventually caused much of the Hellenic world, and the 'Gallic' world to be taken over by a foreign intruder (Rome).