Deezer app for Samsung Smart TV is more feature rich than Spotify app is.
It would be great if Spotify make the same features present in the app for Android (including full access to the library, radios, playlists, saved albuns, etc.) available for the Samsung Smart TV app.
Please, improve Spotify for Samsung Smart TV. Borrow some ideas from Deezer's guys.
There is an idea for a Radio app on Samsung Smart TV here. If you have any specific things you want to see on it, please submit them as separate idea(s).