Achieving cohesiveness in such a system will be very difficult though. There's a reason why Apple chose to keep OS X and iOS separate. I do agree that cohesive

Achieving cohesiveness in such a system will be very difficult though. There's a reason why Apple chose to keep OS X and iOS separate. I do agree that cohesiveness is important to the user experience. It makes me a little disappointed that the extra step wasn't taken to make the Metro UI live on its own without the full desktop experience tagging along.