I thought the unique category rounds were an interesting format. It would be cool if the board had an open contest each day based on a real specific category (examples: numbered to 50 card, specific team's jersey card, dual auto card, specific brand or set card, etc.), and the first ten people to enter then got voted on by the board for the daily winner.
Similar to what I was thinking. See my earlier posts on this. A "tournament" on for those categories with public voting using the polling mechanism. Not sure that a daily winner is possible, but time will tell.