I would love it if there was a way to read the liner notes from cds. I miss being able to see who played on what, who was thanked, who guest artist were, etc. That is the only thing I miss from buying CDs.
I would enjoy if there were some music games that used the music that you have on your Zune: music trivia, name that tune, what ever.
I wish you had an easy to find place to request music that is listed as unavailable. Will it ever be available?
Over all I love the Zune and wouldn't trade.