I'm not sure how the coading works, but I think the best thing HTC could do is fill out the spawn tree. Each and every base, regardless of airfield, vehicle base, or port, should have at least 6-9 spawn points for gv's.
Main hanger, and then the away spawns to enemy fields, then the rest of the spawn points should be situated strategically around the field at 1000 yards out, and maybe even a spawn point somewhere near town or in between town and the incoming spawn point.
Not only would this slap the circle jerkers (campers) in the face, it would decrease the dead time between the spawn time and engagement time for gv's. On the same token, when possible I think there should be multiple spawn points in to an enemy field.