Just f.y.i. and to give some insight in my motivations, I am trying to decide on some definitive (yeah, don’t laugh) scheme for the music player/manager I am using.
I am trying out a new scheme, where the full classical title (containing all levels) is essential as a starting point.
When unleashing several rules/formulas/regex on those titles, pretty much anything is possible in respect to displaying/filtering etc.
And if I can get that to work to full satisfaction (I’m at some 90% now), it will prevent the need to maintain and populate additional tag frames for the different levels, since that required info is already present in the title, and the formulas will dissect those perfectly.
Of course additionally I will be needing tag frames for composers, performers, dates, box-sets, etc. etc.
So I’ll probably end up not using your ‘work/levels page’ a lot, but the remaining features will probably be very valuable.