Ok, now for Smollett's awesome idea from left field.
People should become outlaws through their actions.
From now on there should be a secret achievement (pop 100 enemy balloons, kill 10 ships with mines etc etc). If you finish the secret achievement there should be a message that pops up at the end of the match:
Noble sailor, through your dastardly destruction of dirigible balloons, you have happened upon precious sky whale oil being transported on a Yeshan vessel of considerable value. It's yours for the taking, however if you choose to take it, you'll be a wanted man and hunted across the skies. The choice is yours, pretend you never saw it and continue on with your life or take the sky whale oil, become a wealthy aeornaut, wanted across the land and hunted for a significant bounty.
Bounty hunters will be notified of the crime of their quarry when selecting their names in the lobbies; people who desire to be Wanted will try to figure out the secret achievements and if fortunate, stumble upon them and commit crimes on the guns of icarus universe.