1. It would be nice if the Manage saved searches page colored tags according to type.
2. Also for Manage, mass edit/delete would be handy (e.g. via checkboxes).
3. There should be a link to help:saved searches on the manage page, and when searching for search:all or search:LABEL.
4. When searching for search:all or search:LABEL, could the tags included in the label(s) being searched be listed under the Tags list, in addition to the list of labels?