I find success detrimental to fun.
I don't fly Spixteens or K4s/G14s anymore. Purely because you get in them.... kill everyone (including top sticks) and then fly home again.
Its much more fun turn fighting Spits and 109s and even some early war stuff. In an AUSTRALIAN PAINTED - P-51D... on the deck... flaps out... low and slow with throttle control.
Failing that, I up something completely ridiculous with 1sum41 (when he isn't doing US Army things) and augering/dying/e fighting against K4s... etc.
Or sinking a CV with B5N's