This is making me think about Windows Longhorn. It once had a genuine sidebar that could be used the taskbar's sidekick or be configured to take over almost every element of the taskbar except the Start button. I kind of wonder if the route Microsoft will take will be similar for Windows 8. I mean, there is a geniune fly out sidebar that has empty space, a live tile can be put there. The Settings fly out bar has all the system tray settings, making the system tray useless and somewhat awkward.