Hear hear.
Frankly, in regards to "balance", 10% usage is more than enough to justify a perk. The La-7 hits all the major categories exept one, when considering a perk candidate: rarity(3xB20), balance(10% usage), performance(on par with the 70 point Tempest in speed, outperforms it in maneuverability). The only major category which the La-7 doesn't fit to is the multi-role aspect.
But I digress..
I agree with Karnak, but at the same time, I feel for Frenchy, too. P-47N would be nice, probably perked a little bit heavier than the Ta152. However, for an overall environment where P-47s could really be more confident, the alternative I see, lies with my NPA.
Perk the La-7 at 3~5 points, along with its contemporaries in era and performance. Shift the MA into a '43 environment - in that environment, the P-47D-11 is one of the fastest planes, both at alt and at deck. Just about enough speed advantage to make up for its other characteristics which fall behind.