Guess Album artist when there are contributing artists
It is very common these days for an album by a single artist to have contributing artists on some track. This can make a mess, as you end up with twenty variations on "Kanye West" in your albums list. It's not hard to think of some simple heuristics that would often work, although Bliss could not always figure this out correctly.
How much does this rule help: http://www.blisshq.com/music-library-management-blog/2011/06/07/new-release-20110601-consolidate-track-artists-more-than-twelve-albums/ ? This, however, only sets the track artist tag, not album artist.