For any decent sized, album based collection. This would be a living nightmare. I know it would be for me at least. But, I suppose someone with a bunch of collected singles from the napster years might find this usefull.
So...why not copy your entire collection to a temp location. Then use media monkey or some other whiz-bang tagger to move track data to album field.
Then wipe the dms, and point PMM to the duped & re-aligned data?