Tac,
How abouts they take out the P-38L and replace it with a P-38D and P-38F.
That'd make you happy. It gets rid of an easy to use, high population aircraft and replaces it with older models that are out of place in the current planeset.
The Spit XIV will be perked (evidence: its icon says "Spit14", not "Spit"), but for the CT and scenarios there will now be an actuall 1944 Spitfire instead of just the 1942 Spitfire that we Spit fans have been soldiering on with.
The Ki-84 will probably need to be a cheap perk, but even a cheap perk price will control it. Just look at the F4U-1C. The Japanese built 3,500. That is an awful lot for them, their highest production fighter, the A6M, just pushed past the 11,000 mark, IIRC. The Ki-84 has an honest place in AH, maybe perked, but it has a place.