This maybe also published and sorry if so, but I would like to see a commando key that the gunner in a 2seater just do what he is hired for. Shooting at enemy planes when they are in shooting range.
As a sample when flying the Fee, I managed to get behind the Fokker but the gunner refuse to shoot. Same when flying the parasol, my gunner never shoot when the plane is at the side only when the enemy plane is at rear.

So a commando key, that when pushing, the gunner is offensive and not acting defencive like now.