Myself and two others bought this game on the premise of "drop-in, drop-out" co-op with friends. It's a total detriment to the game not have the ability to continue on our own and just pick up where the least progressed player is in the campaign.. We should be able to play support characters in their game regardless of how far we are individually.

Total shame that we have to set up an exact play time to even try the co-op aspect, being a father of two and having varying work schedules between our friends makes this "co-op" feature a complete blunder.