I agree with everything you’ve written here. Thanks for pointing it all out. I miss Rdio so much. It was a great service that just worked. Almost as if they intentionally tried to get out of the way of the user and just present you with the music in it’s simplest form.
I’d add one pain point from the IOS mobile experience (which I use appx. 60% of the time.) When multiple albums from the same artist are saved to My Music, opening that artist simply lists all songs from every album I’ve saved in alphabetical order by album. So if I want to listen to Paul’s Boutique from the Beastie Boys, I have to scroll past +/-100 songs in a dumb list to get to that album. One more page with every album separated, (with album art shown?) would solve this.