matthewv
Emperor
I think that we can tune all of the possible triggers so that there is a reasonable range of technology that the civs will be in when isolation occurs.
I wouldn't want the event to always occur at the same point in the game, that would reduce replayability. if one time you play it occurs quickly and it is a struggle to survive, and the next time it occurs late and there are large self sufficient empires already it will not feel like you are playing the same game twice.
If you guys think you can do that, by all means go ahead. I just figured this would be rather difficult to do. Some of the triggers you mentioned earlier highly depend on the size of the map you play and thus would be difficult to tune (for example: All civs have made contact with all other civs.).