> Discovery, recommendations and shuffle are at the heart of what made Pandora a thing
That's exactly what I'm not looking for; I'm perfectly fine with making my own music choices. I know what I like, have an extensive "library" on Spotify, and play from just that.
The biggest thing I'm missing from Spotify (or indeed, most players, except the one I wrote myself years ago) is the ability to say "play random album from my collection". Play random track is too biased towards albums with 60 tracks vs. albums with just one track.