The Brawn BGP01 was a SWB car designed around the DD and a forward weight distribution. The tires have changed since then. The new nose regulations will not lower the nose to the levels of the BGP01 or the W01. See Scarb's F1 blog to see a drawing showing the limits of the new nose regulations.
I still fully expect a W02 look-a-like with a stretched body and tighter sidepods.
I am curious if anyone will pick up the U-sidepods. I am curious if Mclaren will retain them as well.