This would be a great way to kill windows. Microsoft Office, IDEs, Photoshop, etc. simply wouldn't work as well in metro. Having separate windows allows drag

This would be a great way to kill windows. Microsoft Office, IDEs, Photoshop, etc. simply wouldn't work as well in metro. Having separate windows allows drag and drop between applications and is a huge boost to productivity. Not to mention you can have several windows open and tiled appropriately so you aren't stuck in fullscreen mode all the time.