As voted by the community (http://www.gamefaqs.com/boards/668999-playstation-all-stars-battle-royale/65208725) the original rule set is back!.
Sign ups will be open until 01/24/13
Rules (revised): FFA Stock 2 No Items No hazards All maps Best of 5 Random map for game one, then winner bans a map and loser picks the next map YOU MAY ONLY SIGN UP FOR ONE CHARACTER. The 20 winners will then play a tournament afterwards.
Leave your PSN and who you want to sign up as here.