Yeah well, if there were a loser's bracket, it could run concurrent to the regular bracket. Same theme or whatever, same deadline, but compeeting amongst the losers. Also allows a comeback if two good artists go at it first or second round. Winner of the loser's bracket has to beat winner of regular bracket twice. Winner of regular bracket only needs one win. That's usually the way we run things at fighting game tournaments in Dallas, and it's generally regarded as the fairest way to do things. But yeah, twas just a suggestion.
Oh and, make it one week per round. Need a little pressure to keep things interesting/moving along.