I just hope the control scheme gets a serious overhaul. Taking cover in the last game was a real annoyance. Shit like staying crouched when you leave cover was just terrible. When I think of Army of Two, I think of unnecessary button presses. Constantly having to take myself out of crouch mode was just so damn irritating. Plus, having to switch weapons should never take more than a single button press. Learn from the greats, Army of Two.
Most irritating: constantly having to babysit your partner. F-ing horrible. You don't get that kinda crap in Gears, Halo or CoD. I know it's a very co-op centric game, but damn, let me at least play the game without having to constantly breastfeed my A.I. buddy.