Right now the drums don't work well at all. You can't hit notes quickly and it pick the hits up. Sometimes you will fail a song due to the unresponsiveness of the drum kit. Not sure what kind of issue it is, but apparently Harmonix is working on fixing it.
Dark Pit, Dr. Mario, and Lucina should all be alternate outfits for Pit, Mario, and Marth respectively. I don't get it. Unless they actually handle differently like some other near-clones (Falco, Ganondorf, Toon Link), but they look identical to their counterparts.
cluelesspug's comments