So in late game, when most airfields are 7 different kinds of trashed, this would be an option where you can spawn in from a map edge (from an 'off map' airbase or carrier) but due to the fact that these planes are coming in from considerable distance, they'd have to have hardpoints taken up by EFTs that jettison right after spawn.
Exceptions made for the Darkreach, which is both fuel efficient and has freakin enormous tanks, so it wuld be more 'limited to 50% max fuel' or somesuch to account for fuel burned in-transit.
While realistically there should be a delay timer for this kind of thing, that's also unfun.