That does look like a nice idea putting lights there. But I think it is cheezy of GM not to give me a full size mirror in place of the no lights.
It is to eliminate SKU's...I hate the fake air scoop on the hood. That might be OK on a toy car for a 7-year old. I'm an adult - I don't get impressed by a fake scoop.
the ones with lights and without lights all get the same replacement glass
the diesels require the scoop so they get the same hood