i predict awful organization and control over a deathmatch contest.
no good way to tally the amount of players wanting to play. VS time allotted and how to ref all that mess.
i had an idea for a unique building contest i might do someday.
instead of letting people build whatever, you post a pic of something you like. a house, building, boat, tree, whatever.
and you pick who submits the best looking remake of it in blockland.