That's not a bad idea, Lazs. Perhaps have frontline airfields be fighter-only, with bomber bases deeper "in country".
The only problem is... closer bases will be captured all that much quicker, so a country that has its act together will quickly overrun all those nearby bases, leaving the defenders to make the long flights.
Very hard to make an even-sided potpourri map when the dynamics of ownership can change so unpredictably.
I don't think it would guarantee that "more people would venture out from their ack to meet the raiders and the fights would be more between fields than at fields"... Human nature is human nature, independent of geography.