I like grass airfields, remote sites. Plenty of examples of this during the war. Maybe it comes with some limitations, like certain planes, or X amount of uppers at one time, easier to take these fields down.
For those horde efforts to take fields, they would not only have to cap a field, and take down the town, with this they would also have to take out a few remote strips. This would include first finding them, maybe icon range is 2k or so, then hitting them.
Maybe these remote strips are not found at every airbase, just as we have a few ports that have airfields, some bases do, some do not. And maybe before a base is captured all grass fields/remote strips have to be identified and destroyed.
I like this idea. +1
Boo