I'm going to use the ( ) method you describe instead of my numbering system, thanks. I too recently made a playlist for moods e.g. loud, mellow, get them in the mood , etc.
My question was mainly to see how others did theirs maybe there was a better different way. Secretly wanting to see others screenshots of their playlists. I may get rid of the Genres folders I don't use them much as it turned out.