I mean stuff like playlists and game modes. Personally, I'd wish they'd drop the points for the scoreboard and use them for leveling up only. They should take your kills, subtract your deaths, and add any assists you have. Then, players are ranked greatest to least. I'd also wish they'd change Capture-The-Flag to have a jail. So, if you get knifed or tomahawked or whatever it is, you sit out for 30 seconds or something.
So tell me, what would you like to see?