I used to hear guys complain about the F4u1C. Since it's been perked, not too many complaints. Many of the Chog drivers just moved over to the N1K and now we get to hear continous dribble about the N1K.
We got two kinds of pilots in AH: Good ones and the other kind. Good ones don't care what you're flying, they'll just kill you -- doesn't matter to them.
So why should the good ones complain about the N1K hoard? I suspect they complain because they are simply tired of seeing large groups of the same plane. Heh, good thing they weren't in the Pacific war, eh? I can just hear them : Damn Zeke dweebs! Why don't you fly something else!

I imagine the Japanese got really tired of fighting F6Fs.

I'm sure they wished for variety!
Anyway, I think the goal of the perk system is to balance the plane set. It's designed to keep the really uber planes from appearing in large numbers. Man, can you imagine what it would be like running into swarms of tempests?
I think the current perk system has a problem. It's clear to me the N1K will soon be perked, probably around the same amount as the Chog. HTC, because of politics, will perk the d9 as well. Guys, that isn't going to solve the problem! We have hundreds of guys with well over 2,000 perk points! Maybe if you charged 100 points for the N1K/d9/F4U1c, it would slow down the usuage.
Why not do this? Assign each airplane a fraction between 1 and -1. For example, you might assign 1 to the 202, 9/10 to the P51, 8/10 to Me109 G10, ... 1/10 to the F4U1c, 1/20 to the N1k, 1/100 to the tempest and maybe -5/10 to something truly uber (P51 with 4 hispanos.)
Now, what you do is use the fraction to multiply times the kills for that sortie. For example, if you got 2 kills in a 202, yup, you get credit for 2 x 1 or 2 kills;
if you get 2 kills in a N1k, you get 2x1/20 or 0.1 kills. If you get kills in the uber ride, yep, it would cost you points.
Many of us (although a lot won't admit it) are sensitive to their airplane score. They may not care about their vehicle score, but I'll bet they watch their a/p score.
This system has many benefits: 1) You can fly anything you want - anytime. 2) You can up N1ks for bases defense - anytime. 3) I'll bet you the score sensitive group will stay away from the planes with small fractions assigned. 4) Discos don't hurt you so far as losing perk points.
The current system doesn't keep me out of Chogs or even tempests. But, if I'm porking my a/p score, yeah, I would think twice before I jumped in a N1k.
AKcurly