The iPod app is one of my least favorite things on the iPad. I especially hope they tweak the way that you add songs to playlists (like dragging songs). Going into a playlist, hit edit, hit add songs...not a great way to work when you're listening and you want to just add one song at a time quickly. How about a way to add songs to playlists from the song view?
Along those same lines, how about a way to work backwards from songs in iTunes, why not have a view that shows a list of all playlists a song is in?
And what's up with lyrics pages constantly jumping back to the top after a few seconds? No other scroll interfaces jump on their own, is that intentional for some weird reason or just a bug?