Having read the comments above, two things strike me. Firstly, if you're the kind of person who maintains a carefully structured folder hierarchy, and tend to "think" of your data store in that way, then libraries are probably not aimed at you. I'm that kind of person. I think we are probably in the minority of Windows users, most of whom seem a bit casual when it comes to classifying and organising their data.

And now a question: folders and drives in libraries have to be on an indexed drive. However, Windows switches off indexing on SSDs to reduce "wear". I guess they are treated as an exception to the indexing rule. Does anyone know if libraries behave differently on a machine which uses SSDs?