From that, just create an interface for Windows tablets that is similar to the existing Metro interface as it does work there.
The confusion of windows 8 is that it's trying to have 2 different ui systems...
Mac OS X seems to have done a decent job of slowing integrating some features from iOS (app store, notifications) without without copying and pasting the iOS ui system into it
I currently spend most of my time on a Windows 8.1 desktop with more than 20 different languages and development environments installed. I never "check email/text" on it, and only rarely use it to watch YouTube (have other boxes for that). To me, the "Modern" UI is little more than a souped-up Start menu.
The misunderstanding that Windows 8 is somehow a lesser Windows is getting old. After more than a year of general availability, surely somebody on HN should know better.