It's not a completely bad idea. However I expect the furballers to start throwing a fit in about....5 seconds.
Better idea:
Have launch points apply to certain aircraft only. IE, weaker aircraft (F4Fs, Zeros, Spit I and V, etc) would not use up launch points, but late-war monsters (F4U-1A/C/D and 4, Spixteen, Spit XIV, La-7, Me-262 and 163 (both of which I STILL think should be removed outright

) 109K-4, Tempest, etc) would cost points. Additionally, which aircraft require points would be dependent on the arena (IE, in the Late War arena, the F4U-1 is sufficiently surpassed by the later models that it shouldn't cost launch points, however in Mid War where she's a more dominating ride she would).