It would be awesome if we could have a local tracking system of different local users playing the same song to compare the scores we have accumulated. Right now it's based on remembering if someone has already played the song and how much the score was. It kinda gets tricky if the song has already been played... and the best score doesn't even reach the top ten scores, you know? It would be awesome if we could have a local score database based on different characters instead of the current "top ten" with all classes. So you could easily choose to display mono and other character based scores on different songs.
In short, implement a "party" mode to allow users up to zilion to register a local nickname and play the song and compare results. A local database would otherwise be a good thing, you could store your OWN previous best scores also, instead of seeing you previous best score that you've gained last time.
Any added ideas?