I have never understood playlists as a 'feature' of these 'services'. If someone wants that, why the hell don't people just download the music and make local playlists? But the entire idea behind playlists has always baffled me - 'yes I want to listen to the same songs in the same order every time I select this' bro you've just made a mixtape from the 80s. And paid for the privilege. Good job.
For me the one and only appeal of any of these 'services' is to take what I currently like, blend like 3% of 'similar songs/artists' that I likely don't know about, and get the hell out of the way otherwise. I've never had a decent experience with 'let's throw random shit at you and pray you like some of it' 'discovery' systems. I don't care what is popular with the masses, I don't care what your 'djs' have 'curated', I don't want to listen to your reinvention of radio, I don't want to listen to someone talk between tracks, I don't want to even be aware of talk show 'radio' oh my christ. Just give me fucking music, that I like, with a hint of weird. I give you my imported data from X prior service, I give you my entire last.fm data, I cannot make it any easier for you to do this. Just, do, it.
deep breathing
Sorry, I went to a place there. After like 20 years you'd think someone would get the formula right.