[LordSappington]

My main problem was there were TWO buttons specifically for an action that did nothing to help you out. Hell, there were times in the middle of a gunfight that I'd hit the button accidentally and end up breaking BOTH our covers just so our guys could air guitar. That was pretty dumb. And the aggro thing was pretty dumb. It went to far; if they just concentrated MORE on the guy firing, and threw less bullets at the other guy, it'd have worked. But your guy went completely invisible; that was dumb.
tl;dr it had a good idea, but poor implements.