hopefully 343 add in 4 player co op for the cheifs campain because i think its one the most important aspects of the game series and playing the campain on your own isnt as fun as running in with three friends what do you guys think?
4 player co-op campaign over XBL has already been confirmed. 
Frankie said at the Eurogamer Expo that 4-player co-op Campaign is definitely in, and players 2-4 will play John clones.
Thing is with scripted sequences, they’ll centre around player 1. So Cortana will only look at player 1 during the opening sequences, player 1’s cryo-pod will be in the middle next to her stand, etc.
Edit: Didn’t read previous post, Sorry.
John clones? Just seems lazy…
Can never have too much MC…
The MC clones are a nice nod to Halo CE. Anyone know if the co-op is gunna be matchmaking like in reach?