Just my thoughts, but I think it would be amazing to be able to expand the album art to cover the majority of the window in the Pandora Desktop / Website version. Some of the artwork is absolutely awe-inspiring and many times is also conveying the message or essence of the songs, but in visual form.
Many artists take great pride in the cover art for their albums and want their listeners to see it clearly as another part of their art, so I think it would be very impactful for users to have a large display of the cover art available to the listener.
Moderator Edit: Changing title for clarity
