I'd like to see a way to tell what the high scores on a song are -while- you're playing it, from in game, perhaps with a feature that slotted you into the list based on your current score and flashed your name? Ideally, it'd display during breaks where it wouldn't distract the player, but I suppose if it wasn't too distracting you could have it show during regular gameplay too. This would make the high score list a lot more of a "presence" and make players enjoy working their way up the list during the song.