Guys in perk planes will get dogpiled already. I have de-capped friendly airfields just by flying nearby low and relatively slow in a Me 262, dragging away more than a dozen fighters all keen on shooting down a 262. A 262 will attract all the attention, no matter how much perks one can gain by shooting it down. Same goes for other perk rides.
The only thing is that perk rides would be used even more cautiously than before, because no one want's to
give his enemy the 200 perks.
Beyond that, I don't see a reason to give players the perks a bit quicker (you could simply ask for a perk price reduction).
I personally never seem to have over 200 because as soon as I can afford a 262 I lawn dart it.
I'd recommend to learn to fly the 262 then instead changing the perk mechanism for everyone, just because you suck in it
