Metro, Microsoft's new UI, is bold; a dramatic departure from anything the company has previously done in the desktop/laptop space, and absolutely great. It's tangible proof that Redmond really can design and build its own unique products and experiences. However, the transition to Metro's Start menu is jarring for some desktop users, and worse yet, Desktop mode and Metro don't mesh well at all. The best strategy Microsoft could take would be to introduce users to Metro via its included apps and through tablets, while prominently offering the option to maintain the Desktop environment. Power users who choose to use the classic UI for desktops and laptops can still be exposed to Metro via tablets and applications without being forced to wade through it on their way to do something important.

http://tech.slashdot.org/story/12/03...tro-vs-desktop