The thing that will frustrate AW'ers most, though, is the gunnery. Having to really be concerned with convergence, ToF, and drop - in addition to all the regular crap of A-A shooting, makes dweebs out of everyone for a while.
There's also the issue of un-learning bad AW habits for those who played that game a lot. Especially in the early days. I'm still saddled with some of these - I don't use rudder much at all (because for the first few years the rudder in AW didn't do nothing), and try to convert a fight way too quickly (back in "the day" you had to).
The B26 is fun. Not as much as the old A-26, but still can be an instrument of terror. Now if only I could transfer all the gunner ammo to the nose guns ...
-DoK