I have two big complaints about Spotify and they are both about the client. Like Om, I too have no interest in books or podcasts and wish I could permanently remove them from the UI or at least push them to the very bottom of the screen.

My other UI complaint is that you can't completely silence their in-app notifications. I've turned off all (20+) notification categories and I still get notifications including some notifications about the notifications.

My non-UI complaint is that they still don't work with Siri. I know it's because of some stupid spat they have with Apple but I don't think their strategy is very smart. If I leave Spotify it will be because of this. If I didn't have the family plan I would have already (my kids like Spotify).