Bottom line for aircraft and scenery... you'll have to meet or exceed the previous SDK. If you want an FSX rating you can't be looking like an FS9 aircraft and using FSUIPC, if you are going to be Flight, you'll probably have to take advantage of certain improvements in the Windows SDK as well as Flight.May sound subjective still, but that's a general guideline for console development. Literally take advantage of the new technology or else don't bother.

I don't think I would pay even 99 cents to have another plane like the defaults.If this ends the ability for users to modify their sim the way they like it, Microsoft will lose a good chunk of it's fan base to people who want to be able to build their own scenery/aircraft/panels/traffic/etc.

I don't think I would pay even 99 cents to have another plane like the defaults.

Remember, the sim has to cover many bases and lots of newbie folks are quite happy with the basic aircraft included in FSX. These aircraft are also really light in terms of CPU and Video requirements, so FSX performs well with these on older PCs/laptops.Cheers,- jahman.