I am generally not a fan of websites and streaming services' "personalised" recommendations as they haven't once in my life applied to me. However, Spotify needs to at least make an effort when it comes to classical music. No matter what I listen to from an extensive library of classical playlists all it does is say "hey, have you heard of Mozart?". Also, listening to operas produces recommendations for cheesy Christmas concerts.
Spotify is by far the best streaming service for classical music as far as content is concerned, so it would be great to see some more attention devoted to its listeners.