But considering the agreements they have to keep costs down, it wouldn't be hard to throw 5-10 smallish boarder only prizes to give incentive. You lose out on boarders because it's better to fill those slots with fodder to sell to the flights. Unless they are offering more tickets to board than a leveled adult is worth.

Also, can't wait to see the drama when someone in one of the flight starts hiring mercs with personal funds. Because no terms can stop that.