Not so much a "has" as it is a "has not"... please, OH PLEASE, don't ruin this game like you did Tiberium Twilight. That game was unplayable as a single player. I suppose I am just an old enough gamer that I still pop a DVD in my rig to escape from the incessant people I deal with every day. I play games like C&C to immerse myself in the world and the battle, not to deal with finding a co-op partner to pass a dang campaign mission.
So, I suppose the thing I want it to have is a SP campaign that is a worthwhile experience on its own, much like Red Alert 3 had.