Yeah, something that might be fun to experiment with. Back in the XP days I was always fascinated with building desktop replacements in flash.
I still want someone to make a hybrid e-ink display. Transparent LCD for the mouse pointer and minimal effects, highlights and things. E-ink for the main body and a completely black and white windows experience, akin to more old style GUI OS, static windows that can't be dragged, but with docking and other useful features.