The only real way we could get a lot of people to join is if this were an official contest with the chance of your entries getting added into official ZC. Whether or not that happens is if the devs want it to happen. Seeing how flexible the rules are this time, this could mean a lot more people willing to join, and a much more unique "6th" quest, so I'd support this becoming an official contest.
(Plus it would make us look less dead.)