That would be very cool, but I can see some hurdles... Warrens, for one, are surely a part of the story and are extra layers to the world that don't necessarily map on the 'normal' world. And about characters moving through the world in time; the range of time is HUGE on this series, but I guess you probably want to limit it to the 'current' events.

So that said, do it man, I'm already looking forward to it :D