Sorting based on artwork

It would be really nice if the software could sort songs based on the size (and existence) of artwork. I have over 7000 songs and constantly search for missing album covers. If I could easily find all songs without artwork (or poor artwork) it would be really helpful.

You could insert columns for the tags %_cover_size%, %_covers% or even %_cover_mimetype% into the table view.
Also you can apply filters.