We don't know all of HTC's intentions with a given ENY rating, or how they weight in game usage, air-to-air capability, air-to-ground capability and ease of use. It may be that all of the ENY's are right where HTC wants them.
However, from player's perspectives there are some that stand out as being perhaps needing to be reexamined. Please post examples of ENY values you think might need to be adjusted and why you think it needs to be adjusted.
Bf109K-4 (ENY 20) or P-47M (ENY 10), Spitfire Mk XIV (ENY 5, 10 Perk Points) and Ta152H-1 (ENY 10).
The Bf109K-4 is at least competitive with the other three fighters and in some cases is superior. All four fighters are functionally air-to-air interceptors only. Either the Bf109K-4's ENY is too low or the other three fighter's ENYs are too high.
Bf109F-4 (ENY 35) or Spitfire Mk V (ENY 25).
The Bf109F-4's usage and K/D are higher than the Spitfire Mk V (per Lusche's charts) and it has significantly higher performance. The guns favor the Spitfire Mk V, but it has a short ammo clip of only 6 seconds compared to more than 15 seconds for the Bf109F-4's single 20mm cannon. Both are functionally air-to-air only. Either the Spitfire Mk V's ENY is too high or the Bf109F-4's ENY is too low.
Ki-84-Ia (ENY 20).
The Ki-84 is a very capable, all round fighter. It has decent firepower, range, agility, speed, durability and bomb load. It seems, based purely on performance, that its ENY is too low.
Mosquito Mk VI (ENY 30).
The Mosquito is fast at typical AH combat altitudes, has tremendous, concentrated firepower, a good bomb load and is pretty durable. It seems, based purely on performance, that its ENY is too low.
Any others? Fw190A-8? Any of the F4Us? P-51B? Any others too high? P-39s or P-40s? Me410? What do you guys think?