"firstly everything has a place, Metro on the phone works, on a tablet will work, on a desktop... im not so sure but ill hold judgement until its out, from my early tests i find the mouse clumsy to use metro"
Well said. This is one place where Apple did well, the gestures in iOS could be incorporated where sensible for touchpads on laptops and their new touch-oriented "mouse". It's a "right tool for the job" approach. I don't know that MS has ever really gotten this with their interface, and making a big smoosh of Metro and desktop, without the thinking through that Apple did, probably won't work.