I don't know of any add-on that does exactly what you want, but the idea is very interesting and I would like to see something like it.
A suggestion is ArkInventory:
http://www.wowinterface.com/download...Inventory.html
I don't know if it could do what you want and if it could it would probably take some nifty configuring to pull off.
Good Luck though it finding something to fill your needs!