I love all the clones except for Pichu, and to a lesser extent, Roy.  Why?  Pichu is pretty terrible, and really doesn't change the Pikachu formula by much.  I don't like Roy so much because Marth wasn't in the first game, no does he start out unlocked, so there's no initial measuring stick to start him off against.  But I say they should keep the other clones.  I'd be alright with Dr. Mario being dumped as a clone and turned into a Mario costume, so long as his fire ball got a cosmetic makeover, too.  Black-jacket Dr. Mario is so bad he made me reconsider where the power glove stood at my last of so bad Nintendo things.