If strats are moved to within a grid or two of the original country fronts, they won't require such a huge time investment for bomber pilots and subsequent whines from 163 attacks. Put GV spawns into the strats as well. On large maps, the strats can be a little further back but not light years back like at present. If the strats get overrun, they can be resupplied or better yet, fought over.
Add randomly shifting, high mph winds over 20k to make the fraidy cats have to drop low enough to where fighters can get at them.
Bomber pilots get 163-free targets much closer to home and fighter pilots don't have to wallow at 30k trying to kill them.