Originally posted by PollyannaX
Sounds fun but unlikely. If it were to happen it would be like in COD5s co-op campain. A sepret option from story mode that you can do co-op in. Also they probobly will remove certain missions that would be ruined with custom classes.
mayb they wont have to remove missions, mayb for some missions you will have to use a sniper or a certain weapon as secondry