I agree that above 40-60 active aircraft is probably overkill, but storing double or triple that makes sense for long term use. Losses and breakdowns are inevitable.
I have generally done the standard route of Hueys, MD-600s, C-130s and CH-47s in my prior games.
Restrictions on numbers is why I am looking at the ultimate multipurpose aircraft. The VTOL, fixed wing, mach capable, 20 troop capacity, medium range (but unfortunately very fictional) Marvel Quinjet. (For a modern game)
As far as the quinjet goes. I believe I am going to have to
- Lose mach
- Really fudge materials advancement to get the weight down and make the rotors and fusion heat exchangers possible
- Get something in the realm of 40MW output from fusion engines. (Something I only think possible with 3He fusion)
Even with this aircraft I would still probably have some Hueys, MD-600s (modified to MH-6 standards) plus the 4 C-130s at prime. I know maintenance will be an Issue, but heck we can just get the Phoenix team to do it as apparently they can do EVERYTHING