1. Allow user reordering of folders. When creating folders, you're stuck with the order you made them.
2. Allow Preset Class to be searchable. Better yet, ALL columns searchable. Using All Tags or All Visible does not do this.
3. Saved searches/Smart folders - whatever you care to call it. Allow users to define what populates a certain folder. As in, Preset Class/Category/Type/Favorite (Ex: Effect/Reverb/Formant/Favorite.
4. True tagging system management.