Another concern cropping up by some developers talking amongst themselves is that for the first time MSFS files will not be editable.

This is pretty much essential for most of the content being provided to us from 3rd party developers. It is also one of the reasons we are able to push better performance out of most previous versions of the platform over default. Under M.S. logic this will greatly enhance stability at the price of being able to provide content. Developers would be forced to work with what M.S. code supplies and that's it. Far too limiting to developers. All products look like they will need to be vetted by M.S. before being sold through it's Market Place. This policy will work great for "Lite" product developers but be detrimental to developers of more sophisticated products that need to work around crappy programing and limitations to provide us with superior products.

The cockpits look great and likely have the functionality of default FSX stock aircraft. I'm willing to wager system depth capabilities is going to be a bust with MS Flight. It might explain why more in-depth developers are starting to look away from it.