I'd like to suggest that the Vehicle Supplies be modified so that they can work on airplanes as well. This would add an extra element to the gameplay of being able to set up (and resupply) temporary airbases near current targets.
Imagine, if you will, a battle that involves finding a clearing near the top of a mountain, dropping supplies (and stationing your C-47 there as a beacon), then watching your teammates (some smoking, many low on fuel and ammo) come limping into the makeshift airfield, resupping, and taking off again to rejoin the fight.
Stuff like this happened in WWII, it'd be an exciting aspect of AH play too.