I did a bit of scanning to see if this has been mentioned before, but didn’t see anything. Probably missed it.
When renaming folders, I use the $if(,) conditional all of the time to help set up the folder structure, but there just as many times when I could also use some sort of “not if” conditional.
This would help tremendously when sorting and renaming compilations by a single artist, for instance, as opposed to compilations featuring various artists. Another example would be to sort one way “if” album sort has a value, but a completely different way if album sort does not have a value.
This might not even be feasible. I have no idea whatsoever how these conditionals work.