Hmmmm.... 
Trees.. bushes.. mounds.. 
Add in a bulldozer ( perked, of course ) 
Some sort of supply and object addition algorithm.. 
LST..
Voila'!   Remote, unmapped airfields built on command.
Why capture a base when you can just build your own?
Would permanently eliminate the argument about fields being too far apart.
Then you could add  seedlings and Miracle Grow bombs ( perked, of course )  to the C47 to reseed an enemy airfield.
Yeah.. a LLLOOONNNGGGG day at work.