The problem is that fast vehicle respawn is one reason people like RC1. On top of that, I don't think farming is really a concern on a vet server like RC1, so a kill cap wouldn't make much sense. I also don't think it's a glitch, that's just how TVMs work.
I do see single seating, spamming TVMs, and camping behind the hills an up and coming problem with RC1. Thing is, TVs take a long time to reload and so can't really be spammed. So it's kind of a waste of an AH (talking to you for3x and dodgeviper).
Dodge told me that he doesn't engage with the AH because he gets taken out too quickly, and I don't think camping far back is the solution. You just become as useless as tanks camping on the hill. You shouldn't be afraid to die because it respawns so fast, so get in there and do some damage.
I'd like to add as a final note, the AH's main job is to destroy tanks. They can do it quickly and effectively if the pilot and gunner work together. They're basically a counter to tanks. To refer to your first post, Striker, they can fly high so that you in a tank can't hit them. I don't think they're OP, they are just great against tanks.