So I know that Belgium, December - january 1944/45 is not known for its airsupport, or air combat, but this was one of the epic battles, and I tihnk we are at a good point to see it happen.
Bulge, right? January, 1st, 1945, P51s, P47s against BF109s and ME190s... The death of the Luftwaffe
It requires a bit of research on the area because it might actually be possible to get it right
Other suggestions:
+ 4km map for more epicness and more maneouvering
+ More Jerry planes than Allied planes
+ Jerry needs to destroy all allied planes, and vice versa (i.e frags)
+ Allied AA guns, Ack-ack and 88s at the German side to prevent spawn raping... Or just make no flight-zone over axis area.. Actually that ought to be the way to go
Main features are basic relief, nothing for gameplay obviously. Hills, trees - forest and scattered, runway, that's it
An actual air battle that encapsulates the idea of the Ardenne offensive.