I had a similar wish way back when (can't remember the thread name to post a link...)
Basically the plan was for the maximum number of available machines within the three main categories (bomber, fighter, vehicle) to be limited based on the field type/size. E.G., there could be a maximum of 60 fighters available at a large airfield, but only a max of 12 available at a small airfield. The fields are automatically resupplied at a rate proportional to the health of three factories (you guessed it - bomber, fighter, vehicle).
As an example, if a fighter took off from a small airfield, then there would be 11 out of 12 more fighters left available for use. If that same fighter successfully returned or a fighter from another field landed at that particular base, then the amount of available fighters would be back to a full compliment of 12 out of 12. Doesn't matter if 50 fighters were to land at this field at once; 12 is the maximum number of fighters that could be used at a time.
As a result, simply ferrying planes from the rear airfields to a front line base would be a great asset to your country. This could inadvertently be done by taking off from the rear, attacking the enemy in any form, and then surviving to land at a front line base if possible.
I fear I don't see this as an option in the MA, though. This would only work if everyone had the same win the war focus to compete as a team without everyone pulling the strings in different directions. All it would take is a couple of noobs to up and crash repeatedly to leave a field devoid of machines. A lot of people just want to spend their limited time by getting as much action as possible without being restricted too much. Could be viable for non-MA events and arenas where all players are squad/mission oriented, but I agree it would be more effective at the grand, overall scale of the MA. Don't get me wrong; I like the idea and I'd be one of the guys to support it, but I'd imagine it would fracture the community by impeding other styles of game play.