Just thought I'd bring to attention, if it hasn't been already, that when using Alternative controls and using a sniper scope for example clicking the right stick crouches & zooms when it should only be zooming.

i agree, i find it really frustrating when i'm standing behind cover and in scope, then i go to zoom in and it crouches me behind cover and zooms me in, making me lose sight of my target. I suggest they slave the toggle scope button to the melee button. So in the case of the Alternative button configuration toggle zoom should be the B button. and the Right thumbstick button should just toggle crouch.