Alpha Centauri is a very old game and hasn't received any love from the developers in a long time. The rights for the game are disputed as well, meaning future support is doubly unlikely. So I don't think the unofficial patch will age any more than an official patch would. I still haven't done any meaningful tests of the game running in wine (started one game, played a multiplayer turn), so I didn't want to put anything in the appDB about it.
Possibly Parallel Threads
Wisdom of the Ancients
