ive always thought that the airfields could be "changed" per arena, or have them suited to each era..
ie small airfields, less ack.... EW
mid airfields, average ack.... MW
LW airfields, loads of acks, loads of troops, loads of ords etc... LW
however maps have a mix of all, and it would require total rework of coad/maps.
also i dunno if it would be possible to have seperate tiles, so all the airfield are different, depending on EW/MW/LW.
so in LW arena a small/med/large/vbase field would be like current fields with loads of ack and spread out strat, while in EW a small/med/large/vbase field would be like the old AH with fewer acks and less strat grouped up (before lessons learned)...?