Ok, I thought I'd asked about part of this before, but hadn't been able to find it. I just found
the earlier (2.5 years ago) thread.
The proposed solution there (splitting things up or adding Series designations as tags) weren't really satisfactory...and I've continued to be troubled by this. So I am bringing this back up for reconsideration.
In the meantime, I've come up with additional circumstances when multiple series designations should be assigned to a single volume.
However perhaps someone wants to merge the threads? I leave it up to the mods/staff.
Thanks!