One thing I have noticed in AH is that fields can apparently be captured without having to actually destroy the place (correct me if I'm wrong). This leads to people having to ability to endlessly respawn to defend the field.
I think one feature from AW might apply well to AH. In AW to capture a field, you must first destroy a certain percentage of the hangars, fuel cells, and other buildings. Once you destroy that certain percent of each type of structure, the field is "destroyed" and un-usuable to the country who owns it until it is rebuilt (generally about 30 minutes). This INCLUDES the country which captures the field--once you capture the field, you cannot use it until it is rebuilt and must defend it.
Greanted you can already destroy the buildings in AH; however, due to the amount of complaining I see on these boards I am guessing this is rarely the case. Requiring these structures to be destroyed would solve the problem of limitless respawners. It would also make it MUCH more difficult for one or two people to capture a fair-size base.
It makes bombers more important, too

J_A_B