I am requesting that you guys consider adding the ability for players to fire their weapons from passenger positions in vehicles (including helicopters). Soldiers in real life do it, so I think it would fit to have it.

Perhaps have it so when you press the toggle weapon ready key your character gets in position to fire out the windows, then press optics key to aim down the sights as normal. Then if you are out of the battlezone and want to go back to the normal sitting you just hit toggle weapon ready again.