Add the beer barrells to the wishlist. It would either increase or decrease time that troops are down at a field. I'm willing to bet it would decrease but that would defeat the purpose.
You know, you bring up a valid point. This is sort of tongue in cheek but we
could have the barrels added as a resupply option/'armament' choice for the Spit - think about it, boosts morale for the erks at the airbases and might decrease rebuild times. You'd have to land them safely at the field in question, dropping the barrels would only disappoint them further. AH2 could be the first game to feature this idea, stranger things have happened (laser sharks? foo fighters?)...
Laugh all you want, this could be cool.