I have not played much since the change, (not AH related) but did fly in the EW and enjoyed it until the only thing one could fly was a 110. A1 was being attacked repeatedly, and it was great fun and fair there, until you had to fly a truck against 109s, 190s, spits and so on. I got off, since flying in an arena where a few numbers can sku the plane set so much, is not for me.
It was just upping kills for the other side.
Is that a game? Is that the intent? Me thinks not! But that is what happened.
Maybe the answer might be, in all arena's, that, underneath the total allowed in the arena, limit the number that can join a given country until the balance is restored. Never let the numbers get so out of whack, and maybe that would help. Allow for some population flux, but don't let the arena get to the point where you are unable to fly almost anything.