I believe the new Player feature is truly brilliant. It feels quicker and more practical than the Spotify desktop application as it launches faster and it pauses the music when I start playing anything audible on web.
However, there is an important feature that it lacks: sorting songs in a playlist. I have huge playlist that I keep all of my songs inside, and this playlist is displayed in a weird arrangement even though I have already sorted it by "Date Added" in desktop and mobile apps. I cannot sort it in the Player extension as column names acting like buttons in the actual app are just some dull text labels.
Please add sort playlist feature to the extension, so we can have the full Spotify experience on Opera.