Just browsing through the pix of the ongoing work at the circuit, it seems to me they'll be making a hell of a mess of the surface. Some of it will be just chewed up and need relaying, as well as a lot of new areas where the earths been moving.
I remember after the ACO butchered the Dunlop hill, nearly all of the drivers had a good old moan about the change of surface where the new track met the old. It seems to me it's going to be worse this time round, the teams will want to make sure they have a good dentist in the crew I reckon. I'm no driveway layer, but I would imagine that close to zero temperatures aren't exactly ideal for rolling hot ashphalt either.
It'll be another excuse for bits dropping off the zytek I suppose.
H