Interesting,
I guess how one stores the data plays a role. I don't have the BS5 yet but would cold see that if you use the disc number field it keeps all songs from sets in the same "folder".
I do know that the the tags that looked up automatically are often all over the place when it comes to sets and even titles can and should be slightly different.
Anyhow, I have for very long the impression that when developing this, to play with the prototype they just used whatever CDs they had flying around in the office. What they should have done is, bring complete large personal collections in and see how it behaves cause this is essentially what we all are/would be doing.
That would for sure have brought up these issues. It seems that they wasted all their focus on MOTS rather then getting the basics down in the beginning.
BS9000, BS2300, BC2, BL2500, BL3, Bl2, BS1, BV8, BC4, A8