In the COD lobbty room, between the start of online games, give the players the option after voting, to slide the screen and visually interact with other players in the lobby. brag, talk smack, teabag something.
Cue up the ability to restrict your video to a choice of different static picutres like; pwned, maybe a middle finger, or maybe an interactive overlay where the last games best player moves his head around to fit snugly into a crown.. you know, something lame but fun for the kids lol.
simple. immersive. a total must have to differentiate the same game on two different systems.