This isn’t a question of perfection. This is a question of MS attempting to cram a (shiny! buzzword!) mobile interface down everyone’s gullets without regard for actual work patterns.
BTW, the irony is that their mobile/tablet interface could have allowed for custom resizing of apps and desktop-like functionality without much pain. Resize button at one corner of app.
Touch the button. Touch once for top left corner location. Touch once for bottom right. Sliding strip at the bottom of the screen showing icons for open apps, allowing fast switching. If apps overlap, you should also be able to touch the exposed part of any app to regain focus.
Desktop switching capability like many Linux windows managers to allow for tiling three or four screens with apps. I feel like that with Windows 8, Microsoft said “let’s copy what Apple/Google did” and showed little imagination compared to what they could have done, at least on larger tablets.
