The sidebar where you can see who you follow and what they're listening (activity feed) to is wasting a lot of space. There's a lot of black and empty areas around user's icons and their text. Also, it's completely inadjustable and takes up a lot of the screen. There's lots of things to improve there!
Hey @hyacinthess this feature has now been implemented--the width of the Friend Feed is now adjustable. Thanks for your feedback.