Dislikes:
stuff that's been done over and over and over. Piss off, knife DMs. They're like many peices of stuff, but each one is wrapped and presented in a different way, but deep down it's still stuff. I have never seen a knife DM that goes outside the usual "1 life floating platforms grapple rope butterfly knife" mold. Rooftops still fall under the floating platform map type.
Weapon buying - Disadvantaged to stuff unless I spend ages being slowly and painfully raped until I can finally get a good weapon.
Fall damage - Mostly depends on the map - Like on pecon's server, the fall damage annoyed the stuff out of me until some time later.
Using tf2 classes for something that isn't tf2 - I'm guilty of this, my boss battle build ripped classes out of other games, but I tried to make them kind of seperate from the originals(Tribes ascend brute =/= the brute I made). Pecon's server is guilty of this.
Likes:
Anything new
Anything unique
New twists on old gamemodes