SW- of COURSE the Ta-152 is untouchable at it's operational altitude (of 40k).Nobody is friggin UP THERE to TOUCH IT. Just remove the plane from the game. It is obviously a niche plane with no niche in Aces High. I'm sure Pyro could take it out and replace it with something that would be used more, like an early version of the I.A.R 80 or something.
Westy- I think the "imbalance" is percieved. Furthermore, I don't see exactly HOW that particular airplane could be imbalancing to the arena. It isn't like there are going to be hordes of marauding Ta-152s flying around, the plane SUCKS below 20k. From 5k to sea level, the planes abilities are truly laughable. I just thought it would be nice to be able to fly something different for a change, maybe get a little more variety. Granted, the Ta-152 has good firepower, and that is the only redeeming feature until you get above 25k. Below that the 109G10 and 190D9 climb faster, turn better (though D9 and 152 turn similar, I think the Dora has an edge), and have a higher top speed. The D9 rolls better as well. And since you and I BOTH know that 99% of the combat in the MA takes place from 10k on down, a planes performance at 40k really shouldn't have any bearing on it's perk price.
So, with that, either remove the Ta-152 or inflate the perk cost back up to 80 points, just do whatever you can to make people not fly it. While you are at it, perk the 109G10 and the 190D9, and make the 109G2 and 190A5 cheap perks (on the order of 40 points or so)- that way you can keep ANYONE from flying the German planes.