I'm afraid not many people will see the danger in such a design. The camera is active all day, interpreting everything you do. You can't switch off the camera, the console doesn't even start if the camera is deactivated.
The software recognizes if you're happy or sad, attending, if your eyes are open or closed, if your mouth is open or closed, etc. All of that for up to 6 people in the camera's view.
The system knows who is in the room, what you are doing, how long you do it, etc.
This combined with the fact that you are forced to have an online connection and an XBox Live account. Microsoft gathers informations that even Google will never get. And how long until the first hacker crews break into this system?
But people nowadays are so indifferent that the XBox One surely will be a success...