I think it would be a good idea to be able to change how much fuel you want in your plane or what you want to carry on it. For example, you just landed in a TBM after bombing something nearby, but now you want to go on patrol for other carriers. So for maybe 1 or 2 perk points per change, you could change fuel from 25% to 100% or from bombs to torps, etc. You would taxi onto the pad or into the hangar and then choose.
Also, a perk system for repairs would be something like this:
1 perk- One aileron or elevator
2 perks- Damaged gun
And so on.