I think this is something that isn't fully addressed from Microsoft or any other websites talking about the new Metro style apps. This "mode" if you will, can be disabled so that you have the desktop experience that you (as well as others) are comfortable with. I agree that the the desktop PC is not ready for the new layout, but I also think that it would be very cool to see on a tablet. Main point, they aren't ruining the desktop experience for anyone, just simply giving you another way to complete tasks (aka the Microsoft way).