I wonder if music services could be a little more artist centered. Clustering 100+ artists in playlists make them a little anonymous to me.
Since Spotify exist as a web player. An idea would be to let the artists design their own web page and let the music lists exist in easy to find tabs as before.
I think this could be a good idea. Additional income could then come from promoting clothes or other merchandise visible in the player.
Like a wordpress page with development of plugins and custom themes.