Well, if it's something to which people apply and are accepted (i.e., a "program"), then perhaps rewards would not be appropriate. However, I really like the idea of it being completely random people ...so that everyone gets the experience of 'observing' and providing a "referee" type service. I mentioned a reward of 5 tokens simply because I feel like they deserve something for actually "working" while everyone else is "playing".
It would add a new element for everyone when you hit that "queue" button 