If base captures are allowed, then dar should be able to go down. Historical plane matchups, I know I've talked about them, should be more than just dog fighting.
I think dar killing would be frowned upon if 2 sides just want to dogfight. But, if there is a movement to capture a base, then that should be a legit target, to take a base the best way possible.
I know base captures would bring more LCA if continually implemented.