Wings of War - Ammunition Limits

Something I have been thinking about for a while is introducing a maximum rounds system into our WoW games. Has anyone on the list experimented with this approach? If so, how have you tackled it?

I was thinking that each plane could have a maximum number of rounds onboard and when these are exhausted, the pilot would then have to flee, back to the airfield (a designated corner area) where he/she could re-arm. Obviously there can't be any flying off the board either.

My feeling is that this would add a touch more realism but also it would give the pilots another level of decision-making. You could have scores for short bursts and scores for prolonged fire and these could be tied in to the standard short range or long range attacks. For example, a short range attack using only a short burst could draw only the one damage card (as opposed to the standard two) but it conserves more ammo. Whereas a prolonged burst could do three damage cards worth but the attacking pilot loses much more ammunition.

A bit of extra frisson would be added to the game as some players might choose NOT to fire even though they are in a firing position. Instead, they'll be waiting on the other players exhausting their ammunition and having to flee. At which point they'll give chase of course...

Any thoughts????