I think a FF knife only server would be insane. No mods, not realistic, not survival. Just friendly fire and the knife. Because while playing on a knife only server you tend to hit you teamates quite alot (they blocking your shot GRR or you just miss enemy and falling onto them) There never seems to be friendly fire servers that arnt realistic or survival, it sucks.
Anyways discuss.
Or if theres a server hoster willing to try it for 1 day (preferable euro :-))
Really it would be nice to have stats to show how many TK you did lol.