Actually - here is an interesting variant:
If you post a mission with PERK PLANES, let there be a checkbox so that you, the mission builder, can use your perkies to pay for the mission rides. The number of perk rides in the mission would be limited by you the mission builder, up to the maximum number of your perkies that you would like to commit.
So - if you have a sh*tload of bomber perks for example, put up a mission with 10 boxes of B29s for 4,500 bomber perks. If you are feeling generous with the vehicle perkies, put up a mission with 10 x Tiger IIs and get some buddies to overrun a base. One of you BADoscar fighter jocks can put up a load of fighter perkies and "sponsor" a 262 or F4U-4 fighter sweep mission.
$.02