I can understand awsdert a bit. Having multiple campaigns is good, but for all those that wanna play the original Dungeon Keeper ONLY, I guess it would be a nice idea that the other "unofficial" campaigns aren't included with KeeperFX by default. I guess it would be better to leave the decisions to the players. Of course, we can leave the campaigns there so that players could ignore them, but the additional campaigns cost in disk space (perhaps not a lot, but still). My suggestion would be to leave the additional campaigns for downloads so that players could make their choices. Also, another good thing about that: KeeperFX would be faster to download without those campaigns.
Yeah, the campaigns list would be a bit empty, but it would be reserved for downloadable campaigns. What do you think about that? It sounds a good idea for me.
And I don't think it would be that complicated... Otherwise, it doesn't disturb me to make a Lite version of KeeperFX.