I also just think it feels wrong that we're changing the rules about every 20 turns (part of this is probably the glacial pace of the game at this time), and there are things I think we won't be able to do at all (like multi-maps -- we can't really regenerate the map to make use of them). I'm also worried about cruft developing on the game as we switch versions. I know back when we had issues about promotion losing-and-regaining, I had a Rifleman unit that would not stop the losing-and-regaining, so that potential bothers me. I know Max Compatibility can handle a lot, but it can't handle everything.