It's specifically their UI when working with my own music collection that I find severely lacking. Almost as if they'd prefer I didn't use my own music uploads! I also dislike the UI/UX push towards their own content, when all I want is to search music or listen to my playlists, not "discover" things (aka the Home tab, which it always opens to by default).
Oh yes, ok I completely agree there. The UX for music uploads is atrocious. It's difficult to figure out how to do what you want without googling it, and it's never straightforward like it is for finding their content.
