Any News Dunk?
Why not ask people who are interested in being a mod to contact you and then have a poll with just those people, leaving everyone including current mods to vote. Then pick top 3 or 4 or 1 or whatever..
Or just ask people to contact you if they don't want to be included then select people from the Top Posters list.
I think its a good idea to give more support to the current mods, freshen up the site and make a few worthy members very happy.