It would be nice to apply groupings based on whether a certain condition is met. My main use case here is keeping track of music releases where some entries have only one main recording artist/band, while others have multiple (splits). While I’m referencing each artist’s side of a split as a separate entity, I’d like to still be able to keep each release grouped together if possible. Something as mocked up in the image below where entries are first grouped by their release type (LP, Split), and then if it’s classified as a “Split” release, apply a grouping by the release name:
While there are a number of ways I can think of to get around the appearance side of this issue, most don’t cleanly (if at all) address any needs I may have to compare artist C’s data vs artist D’s data on their B split release, all the while looking at all other releases I’m keeping track of as well. Currently I just stick with the simple format grouping as shown below, which works okay, and I get by with that as needed.