This looks awesome, and an interesting idea bringing the metro style into web-design. However, from a pure usability perspective looking at this one still image, I must say it's quite horrid haha, but of course I haven't used it live so...
The way it's organized in the image now could make for a nice page in a graphic design magazine, not so much for a web-page. Here are some of my suggestions to make it work for a webpage:
Make the site width fluid, stretching the full width of the window space
Group main navigation tiles together, decrease tile size by about 15-20%, and fixate tiles to the left
Also fixate the header (where the logo is) to the top, and drastically decrease height, or just place logo at top of the navigation tile menu
As you navigate to different "pages" using the fixed left tile menu, or by swiping finger across the content area on a touch screen, have the different pages slide in horizontally.
The pages would be chained horizontally in order, and you could either load all pages simultaneously or perform an AJAX load as you go to (or swipe to) each page.
A nice effect would be to leave the width of each "page" fluid up until maybe 1100 pixels (via max-width), and set the opacity of the pages to 40 or 50%. Then as the page chain slides, the current page would transition to an opacity of 100%. This way, a user who has a screen resolution width of 1440px+ would see the currently active page fully illuminated, and other pages to the right dimmed out, ready to be navigated to.
Have each page vertically scroll independently of other pages. You would probably use an iFrame for the pages.
Would be a challenge to develop, but certainly possible. Very extensive use of jQuery / jQueryUI, absolute positioning, etc.
I'm very-very glad you commented here, because I was just about to get inspired by your brush sets (have been looking at and thinking about them for days now), actually I am planning to create some futuristic web layout as a next project. Maybe a WP theme - or doesn't really matter what type -, the real challenge for me is to visualize the layout.
Don't worry about this W8P, I have many ideas to make that functional and even responsive. I'm doing (planning, designing and coding) things like this every day...
Althought, your ideas are very good and will be very helpful. Thanks for your time collecting them.
Cool. Let me know if you want some constructive input as you work on it. I've been itching to do the same except for an OS GUI for a couple of years now. I'm almost to the point where I have time to actually do it.