Full disclosure… I have no idea what I’m talking about.
As cool as that sounds it would probably turn out to be a nightmare to implement. Just look at the struggles PMDG are having/had with the lack of an SDK for getting their third party aircraft into MSFS. And they’re one of the big guns in the FS market.
Also, wouldn’t you be making BMS completly dependent upon the MSFS platform and the whims of MS/ASOBO who’s only priority is their own product?
I’ve only recently got introduced to BMS, but one thing is obvious - It’s because of a core group of passionate, unpaid devs that we have at least one uniquely hi-fidelty combat simulator. By the time you’d covered the sim in axle grease and crow barred it into the tempermental platform which is MSFS… well, I dread to think what you’d end up with.