My wish is twofold, firstly for the bomb-bay doors to prevent bombs from being dropped until after their tips clear the bomb racks. Secondly, I wish for there to be a sound associated with it, to tell the pilot when they have opened.
My reasoning for the bomb bay doors: If the bomb bay doors are open instantaneously, they are more of a safety switch than protection for the bombs and a reduction in drag (when closed). If they are instantaneously openable, then realism suffers drastically. It is strange that bombs can go right through the doors without damaging them.
My reasoning for the sound: If the pilot is in the bombardier's seat, then he cannot know whether or not the doors are open, and risks damaging them by dropping prematurely.
-Penguin