1. A filter for files less than 1meg so that you can stop ring tones showing up in your music library.
2. A sleep timer for music player.
Additional Functionality Suggestions
/signed
ability to assign different sounds to alarms, rather than 1 sound for multiple alarms
Customisation for the media button. So we can actually assign other things, rather than the set music, pictures etc.
More use of the screen space, maybe 4 more shortcuts, especially for those who do not use the contacts bar.
Sort out the double/single click. On some bits, its just daft.