It's very easy to show the artist field only if all entries match and show "various" if there is a mismatch between all tracks with the same source.
Likewise it would be nice to get all the track times added together and displayed in the Duration field. You could even do averages for bitrate and the year can be handled the same as my suggestion for artist.
Of course, Soup views are going to run into problems when you get two (or more) albums with the same name by different artists. In its current implementation you just get everything lumped into 1 album. I leave it up to the empeg guys to figure out how to handle this.
To be fair, I don't think I have any two albums with the same name right now.
Bruno