Otherwise, it's part of game, but very easy is play using hidden characters in this game. And is possible to made very high bonusses without special skills. I'm always against not using hidden characters because it's part of game as zlk say. But in this game it's a bit unnatural.
tough to call, ideally fighters should split be split by character. people always use the easiest character anyway even if it is a standard character or not. So even if we disallow special characters, the fighter game then becomes a "use the easiest/scoring-est regular character" game. You might not get more finishing inps but it doesn't really change much.