I don't like my songs renamed for me by default.
iTunes is causing me headaches right now, as my wife just told me a good chunk of her music collection is pre-pended by the artist name. (e.g. Rich Mullins - Screendoor). This may seem like only a minor annoyance, but on her iPad (hailed as a device of simplicity and clarity) the column which lists song names has a fixed width - so a good chunk of the songs are listed as "Artist Name - Son....." She can't see the song names!
Why on earth would that be handy? There is a specific field for artist names.
I just can't grasp the user-friendliness.