Interesting; if anyone cares, I've actually been doing this for weeks.

I didn't think anyone else would like the idea though. It's not of much use unless you don't want to use another shell (which I don't). By the way, the above solution will only work with the more recent versions of Windows. If you have an older one, google "shell switching" or go to just about any shell site (they usually detail how to change them).
@Rubberduck: There's not that much to see, really. However, the Explorer shell will no longer be operational (This is a good thing in my mind), so you will lose things like the taskbar, desktop icons, desktop right-click menu, and the default Windows hotkeys. A few things will still work, since they're not a part of the shell; CoolSwitch (Alt-Tab), Ctrl-Alt-Del dialog, and window handling.
Some things I use in tandem with my AutoHotkey shell are various programs from
AM Productions and the wonderful virtual desktop program
SDesk. Other than that, many of the necessary functions can be provided by AutoHotkey.