Lets assume that mafia managed to exist little longer, and corrupted one player to 'utterly corrupted;' status with their item (and maybe with help of SK aura).
What would it be, if ATPG (or, better, Issaikhaan) suddenly have VC like that?
VC of utterly corrupted player: you are scum-related survivor. In order to win a game, you must survive to the end of game and one of scum factions must be victorious. If all both original scum factions are eliminated, you become faction of you own and can win only if you eliminate ALL other player.

It could change the course of this game.

So we are back to two main things (IMO):
1. no college wars, so lower corruption and time to concentrate on scum catching
2. mafia members would do better if they try to keep low profile (no night kills!) and have one member in every college. I was thinking about mafia players having information of every action of every college in the game...