Who cares about ENY? The only perk planes worth using are the chog and the me262. The chog is so cheap you dont really need to fly high eny planes to afford it, and to me, the 262 isnt all that fun unless you have a lot of practice in it. (Odd catch22 I think) ENY is pointless.
I understand that ENY and the perk system are to reward using early war planes, judging by the usage of perk planes, it doesnt seem like much of a reward. To me at least, being targeted by every plane within 6000yards isnt much of a reward.
As things stand now, the only reason to fly an early war plane, is for the sake of flying that plane.
Still, it would be nice to see an additional stat in the scores list(preferably affecting rank, though the dweebs will squeak) A stat which would figure the ratio of perks given to perks earned. To make flying low ENY planes not only earn you more perks, but show up on your score.
i.e.
n1k2 kills f4u-1, f4u-1 gives n1k2 .25 perks.
f4u-1 kills n1k2, n1k2 gives f4u-1 4 perks.
n1k2 has a ratio of .25 / 4 or .06.
The other way around, the f4u-1 would have a ratio of 4 / .25 or 16.