Think you missed the point of some of the posts. Basically, unless there is someone constantly with their map zoomed out theres really no way to catch one enroute or it's usually too late when someone does spot one. That plus a lot people dont find it entertaining or rewarding for the amount of time it takes to fly up to 35k+ to intercept a raid. And games are meant to be entertaining and rewarding.
It's not that hard to zoom out on your clip board and check around HQ area and routes leading to it every 4 or 5 minutes.
And people complain about climbing out, yet they will spend their time climbing to 10k above the furball and pick. And proceed to complain on 200 when they get killed. I'm not going to point fingers, but we know who they are.
If they can make an effort to not fight and run until the sun sets, then sure they can make an effort to defend the HQ, because they spend most of their time climbing above the fight anyway, or they can simply make an effort to shut up about the HQ. Nobody wants to hear it. My time in ACes High has been short but I've had it to the bucket's edge with HQ complaints. It's so pointless to complain when all you have to do is spend 10 minutes defending the HQ, instead of spend an eternity whining about it.