If it is forced Coop-Only in any way I will cry
Well, basically what I meant. Not so much forced coop, but a game that is designed very much to be played coop.
Assassin's Creed is a large story-driven game. Does it really need coop? Will it just get in the way of the main campaign?
I think it will be okay if it isn't part of the main campaign though.
I think what annoys me the most though is that it seems to be an ever increasing trend. Everything needs to be multiplayer, everything needs to have coop. And to be honest, it doesn't always make for a better game. I don't think it made Resident Evil 6 a better game, or Dead Space 3. Of course those are two franchises that were based on survival horror, so it definitely lost something as a result. The point is though, not all games benefit from it.