you know how in Crysis 2 you can kick a car and send it flying? well apply that to kicking a person, just for the sake of the trailer. so the trailer would consist of Alcatraz screaming "THIS IS CRYSIS" then kicking an alien off a cliff or highrise while using that exact kick!
obviously this would have no gameplay value and wouldnt need to be in the actual game, and would be purely for laughs, but it would be pretty awesome and I think we can all agree.