I think this is going to be one of the best additions to the game, it's gonna give you all the practice you want in learning a new plane, other then going into the MA or TA and doing it there. I think alot of people are going to use it to improve there bomber gunner skills as well.
Plus this will give the new people starting out a chance to get use to flying the planes before they head out to the MA.
One other thing, will there be the ability to use the A.I for GV vs GV fighting, or even GV vs aircraft, like using the Flak against aircraft?