In the past I haven't used Picard for cover art, but am now starting to, because the MusicBrainz database has really improved for getting high quality artwork.

However I am often dealing with a mix of files - some have great/perfect cover art or scans already, some I need to add artwork to.

It's really tedious to go through the options to set and unset the cover options I have chosen - could it be added as a toggle like with 'Rename Files', 'Move Files', etc? I don't think it would be out of place.

Professional mockup: