1). Bring back the Xbox Guide Menu to quickly view messages, and online friends. Try to implement it with the Xbox Button or the menu button on the controller
2). Bring back notifications for when a friend gets online and when someone sends a message.
3). Allow us to customize the background color of Home Screen, to me, black just makes it seem depressing.
4). Allow for a settings tab. For some people it would be easier, it took me a while to find it for the first time.