I would also like to say, How about a... Create Character mode? You can draw your own character, not to big or to small *theres a box that you can draw in* and you can select 3 attacks for it, and choose the option if it can fly or not....
Maybe You could get bonus exp and cash from doing small things like...50 cash and exp for getting 100 headshots...e.t.c whatever comes up in your mind, + this or not,i dont really care. :3
I think in a team death match/ or capture the flag, there could be a limit you could set to win the game, like 10 kills/captures-100/1000 or so on, or you can put it on endless mod,...this is just a suggjestion.