It would be better to include some 'NOT' operation/relation in smart lists, for example: In "Collection relationship" entry, it would be better to add 'Documents NOT belonging to any selected Collections'. Basically just to show results that excludes some of the collections (Manually selecting all collections besides some is really difficult if you have a lot of collections).
Also, for the name entry, it would be better to support options like "does not contain" to exclude certain search results.