So within the report (Status Report or Fix Songs) yo can browse by Album Artist and quickly seem album covers missing for that artist, but there is currently no way to just easily browse all albums by all artists.
I plan to add a Browse By Album view soon that will let you quickly browse by Album for all artists , but for now I have two workarounds.
From report select View Metadata as Spreadsheet , this includes an artwork column on the Basic tab, so yo can then identify missing albums.
Use Jaikoz , its free (if not modifying data) and dispalys the same columns as SongKong
Also, regarding metadata in general I have toyed with displaying a percentage complete metric but not yet done.