What is the aim of the “no art” list? I assume this is for your own tagging? You’d need to restrict the list as just searching the whole database for no artwork is huge and doesn’t really make sense.
For example, I am working through all my CDs scanning and then uploading them. I have all my CDs in MB as a Collection. To help me know which ones are missing artwork I will use this userscript to Display cover Artwork: Display cover arts in MusicBrainz pages: “mb. FUNKEY ILLUSTRATED RECORDS”
This is brilliant addition that displays the art when it is there. Combined with having a “MB collection”, it gives me a set of pages showing all the artwork as thumbnails. Really very handy for spotting those that have no artwork yet.