What you say is mostly true except talking about being limited to one window per screen. That's only for the handful of apps that I doubt you will even use.

I had said I was able to make one of the new features work in Win7 with Office 2010. I had to connect my Microsoft account to my login and download an addin for Outlook in order to make it all work seamlessly (meaning one login tied to my Windows password and one calendar available across multiple platforms). In Windows 8 with Office 2013, it's all built in. No searching the web for techniques to do something. I agree this part didn't require a start screen interface rewrite.

I don't get why adding the Metro interface and allowing you to use the same apps as you can on the phone and tablets is such a big issue. Nothing was taken away regarding using desktop programs in a windowing interface. So a few system settings were moved around a bit. Big deal. I do agree MS appears to have flipped the interface. I think it would have made sense to have a Metro portal from the desktop to allow you to run Metro apps so you have cross platform usage of apps. I might have wanted a better visual indicator on the start screen to tell me which tiles lead to Metro apps (with crippled interfaces) and which lead to full fledged desktop programs.

Since I rarely use the start menu in WinXP, Vista or 7, I expect once I go to Win8 on a work unit I would do the same as now I and run off the taskbar where I have my common data files, folders and programs pinned.

I also recognize that with 20 years plus of windowing capabilities out there, only a small percentage of users actually window their software. I get amazed when I see green screen emulators in full screen on a 24" monitor when all they can show are 80 characters wide and 20 lines. Probably only 10% of users actually window their desktop programs.