Well, I'm not creative enough for that. As a career technician, I hang "stuff" together and then see if it works.
Here, that applies to AI aircraft, AI flight plans and airports in P3D v. 5. I don't know how many aircraft and flight plans I have at the moment (it's a lot of both), but there's almost 16,800 airports in my database, AIFP tells me. And I still haven't broken the sim, just just takes a while for it to start! It's fun to sit at 04L at KJFK at 08:00 hours and watch the (long) parade of aircraft coming towards you to take off....
Jorgen