Sorry. I am not at all sure what you are saying in your first sentence quoted above. I don’t have a desire to learn how MSFS goes about recruiting “add-ons” or how they determine the compatibility of those “add-ons” to the basic program. In my book, MSFS is still MSFS.
As an avid aviation fan, and flight sim nerd, I can tell you that the difference between the default a/c on MSFS and an add-on like PMDG's 737 -6,7,8,900 series and the wonderful Level D 767 is light years.
I fully refuse to fly any...er.....sorry....'fly' any default a/c. I'll pay 60-80AUD for an add-on and let me tell ya it makes a difference.
The flight dynamics for one. Planning the descent and approach to use idle as long as possible aint easy. Maybe easier in the real a/c eh! Supposedly use of spoilers below 250kts in the real a/c seem to do little. Which is how the add-ons are modelled. Default a/c? Um.....no.
No FMC in default a/c either. PMDG state of their FMC : " The complexity of mathematics contained in real FMC's has been reproduced here to an extensive degree using actual engineering methods and principles".
Could well be all a wank of course, but I believe it. Also to consider is that the realism can only go as far as the constraints on MSFS anyway.
Know a real pilot who purchased the Level D 767 add-on to practise before using a real 767 sim for the first time in his attemt into an airline here. I later asked him how close it was thinking it would be poles apart. Kinda supprised to learn that the performance was quite close.
Have also met a real 767 F/O who was also very impressed with the add-on. And other pilots I've met have told me that they know new into the airline pilots who use it to get up to scratch on procedures/FMC usage into airports they've never been to before.
Maybe I'm just making excuses to make me feel less nerdy!
Unlike some, I'm also the first to admit that I CANNOT fly a real aircraft because I 'fly' jets well on MSFS. But I'd sure as hell love to test my skill on on real sim. Of course that'll never happen either.
Now lastly, I HAVE flown a real a/c. Actually got up to solo nav flights many years ago when I was learning to fly. Unfortunately, a number of things prevent me from going any further. One of course being $$$.
It'll always be my biggest regret in life. Hey guys, I envy you all like you wouldn't believe. Which is why I view these forums. I love it! I look up at EVERY a/c no mater what. Hell, I even got a job near an airport!
'Flying' the big jets on MSFS will always be the closest I'll ever get to doing actually doing it. So try not to laugh at us nerdy PC 'pilots' too much. Perhaps many are like me and will never get the chance to really do it.
Oh, and I'm not a skinny glasses wearing nerd. I'm actually pretty good looking and have muscles. Just for ya info!