I'll forgive them if they actually upgrade some of the stuff in left 4 dead 1 to 2s quality, like adding the spitter infected, some melay weapons, make the boomer somewhat bullet resistant in VS and upgrade the AI director to twos quality.

Basically all I want is something that'll make it more challenging and break up the ussual rigmarole in vs so its not frustration alley like it usually is (unless the human team really sucks or has a bad player on it)

and making the ussual non infected zombies tougher just wont cut it, basically a hybrid between left 4 dead 2's gauntlet and crescendo event is needed, those crescendo evens start to suck after awhile in single player.