-No backwards compatibility
-Requires you to be online to register a game just to play it (confirmed by Microsoft VP)
-Requires you to be online at least once a day (Confirmed by VP)
-Requires you to have a Kinect just to use the Xbox one
-Restricted amount of viewers able to watch videos (additional fees for additional views)
-No ability to lend or borrow games without purchasing a full registration ($60+)
-Charging full retail price for serial keys/authorization codes
-HDD is not replaceable so if it breaks you're SOL
-All games must be installed on the HDD
-Requires extra peripherals to use the TV feature
http://static.giantbomb.com/uploads/...4071-PC_Ga.jpg