Bases still flash when the HQ is down. The argument that you can't find a fight with your limited time seems weak. It is more like you can't go into a fight with all the advantages you want to at all times.
During the war all sides would have radar outages. That could take many resources to fix.
Some guys spend a long time to set up their HQ bombruns, and are thus not killing other targets. Why should they not be rewarded with being able to fly home unmolested?
This is one of the last things I would change about AH.
P.S. I feel this is relevant because of the amount of HQ takedowns lately, and thus NOT a punt.