Yeah I've always felt hittin one building at the back taking all the dar down abit of a joke...
My solution... as long as HQ is up all fields communicate and you see dar as it is currently when you are in the tower!!!
if hq is down! or you are in flight you ONLY see dar for the field you are actually at.
You do not see any dar, cons what have you at other bases, unless you actually move to that base.
As you fly into another fields dar coverage, the field you started from, all dar and cons displayed on the map dissappear and the new field's dar etc is now displayed. This would represent to a degree radio comms between the pilot and the tower.
Oh yeah, but this would still have the current field dar which is destroyable
So even if you login to find hq flat, it won't take you long to find a fight
Perhaps leave dar bars visible on the map at all times while HQ is up
SKurj