I think it would be great if this were added as a multiplayer mode to a different game

[vudrash]

Like Gears of War! Oh yes, bear with me!
Like, have permanent jump in jump out coop where you jump into someone's Gears of War campaign and instantly turn it into bientot l'ete and you're all like "Love, what is it?" and the other guy is super furious, but all he can do is tell you he loves you or turn off his console.
Best game ever.