After having my hopes raised by the spy picture of the car on the car carrier, now that it is out I have some reservations about the C-6, too, and these mainly center on the front end. I like the wide, full grill, but the headlights are a problem. I agree with those people who say they look way too much like other cars (e.g., Chrysler cars to me), and I think an interesting treatment would have been a combination of projector beams in hideaway lights-----since these projector beam lights are narrow, one styling treatment could've been to have the pop-ups be very slight (several inches) under a flat cover. A talented stylist (of which GM repeatedly proves it has none, in my opinion) could've made these look very futuristic and mean-looking.
But you know, I think the funniest thing about the C6 is how much it is trying to evoke memories of the C2s and C3s, yet trying to be an evolution of the C5 that avoids some of the problems of the C5---it's almost as if the final product is a hodgepodge of all three with nothing particularly unique of its own, except the Chrysler headlights. With all the redesigns the C6 went through this final result was predictable.