This goes beyond my creative abilities, Vorticon.
I'm not sure how this could play out.
Here's the pro's I like:
Factories produce random A/C, once Detroyed, that A/C SUPPLY to field in supply zone cut off until factory rebuild.
Once Factory dead, Each A/C at each field has a set inventory.
Once Depleted, these A/C can no longer fly from these fields.
Re-arm pads also become Repair pads. (Hell, make 'em taxi to the hangar for repairs, Dammit.
Pilots will be encouraged to bring their rides home, and suicide jabos will be cut down to the weakest A/C.
So, the question is, do we go for a A/C inventory limit per pilot? Screw it...how about 1! Crash it, fly something else.
Or do we go with a set number of A/C per type, per field, for the entire country. (I don't think we can prevent abuse here so I'm more for option one.)