IMHO:
microsoft gone and done a big mistake there, i dont even see the target audience!
if its a simulator, it would be us guys, and we'd enjoy the accurate weatehr modelling and realistic physics, but the addon community is a huge turn-off for us, so we arent likely to be an active user at all
on the other hand, the casual gamer who appreciates the casual style of gameplay, rather than simming, wouldnt care for the untea-realistic flight physics, and only about the gameplay, which has had very little (or no?) mention so far
so whatever the marketing reps were thinking of when they contested the idea of a great FSX sequel, they must have known something that we dont, else they've just laid their butts on the line big time