Ability to swap weapons. This could work by walking to a player and pressong down on dpad. Player sees trading icon on bottom with weapon they want to trade.

Ability to swap points. Maybe same way i said above.

Game pause online. If the host pause,U PAUSE.

Map maker. If cod ever has map maker then the ability to make nazi zombie map. No scores would be added to leaderboards.

That all i can think of...

or if not a map maker a way for people to make custom maps on their computer which makes it available for download to a ps3/xbox 360. or they could be like halo 3 and put in something like forge.....ya that would be so badass

Actually if you have played far cry 2 the map macker is good. Ill lretty just say what cod could steal from it to keep on topic. Blank field with nothing to start with and thousands of items and scenery maker.