Few years back Pyro posted about making ammo perks. Was going to have a charge for ammo when you left, and you'd get a credit for any rounds you landed with. New players would only be able to take off in 303 armed planes, until they had enough perks to get a better loadout. We'd also have to pay for bombloads, which woudl be consumed when dropped.
And after about three pages of exclamations and whining, he admitted it was a joke.