Can't get over the looks and the weight, but on the latter issue there really is no solution. All of these vehicles (S7, CLS, 6 Gran Coupe, Quattroporte...) are similarly overweight, so if I was buying in this category I'd probably wait for the new Quattroporte.
I know this isn't how potential buyers of this car think, but if I had to spend the $150k, I'd get a used 911 C4S and a Cayenne Diesel.