Are there any mods out there that allow the players to vote on difficulty similar to Left 4 Dead?
Conversely as an admin I would not want people changing the difficultly. It is what it is. If you don't like it go somewhere else. Supposing a regular joined only to find out a bunch of clowns had already changed it to beginner. It would just alienate the regulars you like playing with.
since KF has progressing difficulty by wave and L4D doesn't, this can be exploited. this feature would cause noobs to just vote the difficulty to easy once it got to wave 7 or so. and for sure on the patty.
That just leaves the server open to server hijack by the majority.