I would pay lots of perks to fly the plane that I want when ENY lock is on. I don't care, I have bazillion fighter perk points.
The catch is this:
I have never been ENY locked in anything but a 262. My main ride is ENY30, my other rides are in the 20--35 range. This is also why I swim in useless perk points.
Any La7, Spit16, 109K, P51D pilot that cannot successfully fly an La5, Spit9, 109G14, P51B should seek out a trainer.
Any "dedicated" La7, Spit16, 109K, P51D pilot that flat out refuse to fly an La5, Spit9, 109G14, P51B, because "it is a completely different plane
" is an idiot.
To the OP suggestion - this has been suggested before. I wouldn't mind it provided that the perk tags are high enough to be meaningful barrier. I would easily pay 1000 perks for a 262 just to hunt down that annoying enemy 262 NOW.