The dream of Windows Phone on tablets is almost coming true
The Windows desktop is at once the most important and least important part of the Windows experience. On the traditional desktop and laptop, it's fundamental; it's where most apps run, and it's where most users want to be. The perceived downplaying of the desktop in Windows 8 was one of the many reasons that desktop users were unhappy with the operating system.
But on the tablet, the desktop is a liability. Small, fiddly apps that aren't designed for fingers do not make for a good tablet experience. Every time a tablet user has to use the desktop—and on Windows 8.1, they will have to do so at least some of the time—then that tablet user has to suffer an experience that is, at its heart not a tablet experience, and it's no fun at all.
The Windows desktop: totally essential in some situations. Totally unwanted in others.