I often wonder what kind of work actually happens at Spotify. Pretty much every major change to the software or api since I started using it has made the product worse.
Breaking libspotify, pointless UI redesigns, obvious, user-facing bugs that go unfixed for years. Removing features like play queue for long periods. There's metadata errors and even audio corruption in some albums that I actually reported to them years ago, never fixed.
As for new features, there may be more but the only one I noticed somewhat recently was the ability to view lyrics at least for some songs, and sometimes but not always synced to the music. But this was already an add-on for Spotify wayyy back in their original client, and then they axed add-on support! This feature was gone for years after that.
I'm legitimately curious at this point what people actually do at Spotify besides billing and accounting.