Interesting idea, though I have to wonder about the weight that this bag would be! Hard shell, shelves, tons of velcro everywhere. Seems like you'd have 10 lbs before you got it packed. Never heard of anything like that, the closest I found is this:
http://www.fireauthority.com/style.html?assort=fireauthority&style=BG044&cat=4312

Essentially a duffel bag with smaller bags in it, so not very good at long distance camping.