Hi
I have an idea that may have been posted before
If you managed to land a plane that is damaged, you could taxi into the hangar and get it fixed. I think this should take a bit longer than refueling.
That would prolly make more pilots try to get back home, and not just bail and get into new once.
I also think you shold be able to continue with your kills if you get into tower when you have landed and get a new plane or whatever for the hangar. This should continue until you have been killed or captured.