Also, if you want to make sure the committee reviews everything fairly just make it so they can't see who submitted the model up for review, all they have to go on is the quality of the submission itself.  That way you could never say "I got rejected because the committee has it in for me.." because they would have no idea who's models were who's.

Pay your committee members a little extra stipend from the revenue sharing dividends as long as they remain active in judging submissions, and your all set.