2 body shots is fine, cod takes 1 body shot(scope sway), halo takes 2 body shots(no scope sway). They could always slow down the fire rate or something to make it reduce the time to kill on body shots. but the flinch needs to be fixed, too many times you can just pull the trigger even thought you are being shot by autos or pulse and it will still give you a head shot even though you can't see their head.