What you want already exists. It's called Qobuz. I switched from spotify and I am pretty happy. It does not have any bells and whistles but it's exactly what I

What you want already exists. It's called Qobuz. I switched from spotify and I am pretty happy. It does not have any bells and whistles but it's exactly what I want. Just music and playlists. With the added benefit that it has lossless audio.