In the case that prompted me to make the suggestion there was a simple name pattern.
I had over 500 folders; each identified with just a nondescript number. Inside each folder was 1 to many files with a name and a number, just as in your example, although the separator varied. Each folder is name segregated although there are duplicates across folders. The %nc variable would sort that out though.
Of course this is the most straightforward case. As I thought about it it seemed that if one approached the idea more generally there might be many variations.
Examples:
Rename folder based on first and last file in the folder
Rename based on earliest or latest date of files in the folder, or both.
I am not a Regex expert but it also seemed to me that if a folder contained a bunch of files that didn't fit a pattern but if each folder contained at least one file that did match a pattern that a multiline regex search could grab the desired info.
OK, That one's maybe a stretch.
But it seems to me that if you make it generic enough, who know what ways people will figure out how to use it?