so here is my idea, take one of the fuselage blocks, you know the ones you can change the dimensions of? Make it with a squared hollow and open on both ends make it so you can ad pillions inside. Add bomb doors along the entire length but scale-able on the width, and make it activate-able so you can set it to an action group. When the action group is activated it opens when deactivated it closes. Yeah I know adding it would be a big project but please think about it?