On a system that isn't a tablet, I DO NOT WANT A TOUCH INTERFACE, or even a hint of it unless I get a touch sensitive monitor and explicitly turn it on (a prompt asking me if I want to would be fine, too). For desktops and laptops, Windows 7's start menu is absolute perfection.
Don't try to improve perfection. I don't want to see any trace of the formerly-known-as-metro style interfaces anywhere on a desktop OS. Don't try to sell me a Windows tablet and think that shoving a touch interface in my face on the desktop is going to get me to buy. Android is where it's at for tablets. Trying to force that crappy UI on me will make me not even consider Windows tablets even IF you make it far superior to Android.
All you've done is alienate customers with Windows 8, and you're still trying to shove that loathed (loathed isn't even the word for it) abortion of a UI in people's faces. I'm going to be buying a bunch of Windows 7 licenses while it's still available because Windows 9's isn't shaping to be much better than Windows 8. If I have to run 9, I'll be installing classic shell on it, like I do on Windows Server when I have to work on Windows servers (who the FUCK thought it was a good idea to put a tablet UI on a server OS anyhow?!)
Oh, and while you're at it bring back glass. Knock it off with that Windows '80s flat look.