I still don't really understand why we have non-capturable bases... I know they help protect the HQ, but at that point, the country's pretty screwed anyway, and those bases basically shut down the fight since no-one wants to attack an invincible base.
Some of the most fun I've had in AH was having our backs against the wall, the horde attacking our 163 base, and desperately trying to hold them back with our 60 pt. fighters (that could easily turn into gliders!)...
Really, I just wish the 163 base was capturable. As it is, the most fun fighter with the best dogfights gets stuck shooting down level bombers...