Slack has recently come up with a way to group different channels with something resembling a folder. It was be extremely useful if you could do the same with Spotify's playlists: group them by a common factor and being able to expand / minimize a group of playlists. After using spotify for 8 years, I have about 30 playlists or more. Which means everytime I need to find a playlist or navigate my playlists it takes a while. This would fix that issue.