I think there should be a 4v4 gamemode and a 6v6 gamemode. Maybe even an 6v6+ gamemode. I love going into the crucible with a full fireteam of 6. Most fun I had in the game. For normal play, 4v4 is fine, but I feel it will be really empty on larger maps, if there are any. I was also hoping for some sort of BtB gamemode. Eh, still hyped though.