Well, having both stated my opinion on this UBB before, and being the object of Bloom's ire in the arena, I'll weigh in again:
First: exiting a tank with no treads and no turret isn't dweeby. It's along the same lines as ditching a plane with no engine and no ammo. I'm not going to sit in a tin coffin and wait for more shells to come in just so someone can get their kills.
Second: .ef/tower button should only work in "landing areas". Outside of that, bailout should be enabled. If you leave a tank, it's a bail. If you leave one with damage, someone should get the kill.
Finally, another issue that came out of our little tank battles (which were great fun), which I'll post elsewhere as well: icons.
vehicles are the only things on the ground with icons, and they're above the vehicle. with tanks, which have handy ranging hashmarks, icons are a great, indeed, excessive help. So, heck, I'm in favor of reducing enemy vehicle icon range to 1000 yards.
One advantage of such a reduction was suggested by one of those battles.
Bloom and a colleague were in the flats, and I ducked behind a hill, and proceeded to climb out of visual range to a hull-down position. Unfortunately, although my tank was not visible, my icon (and range) was. So while I'm in 2nd gear clawing to a hull-down solution, bloom and I are exchanging BVR shells. In this, I'm hampered as, on a bank, the hash marks in the gunsight are not 100% accurate. His are. At 1,800 yards, he (in an admittedly admirable shot) lobs one over the ridge and kills me.
What good are any sort of tank tactics when you've got this huge billboard above you?