I have a feeling that a lot of people will gladly trade trade in their nice round tail lights after watching those ugly, Camaro-esque tail lights disappearing into the distance in front of them.
I have a C4 with round lights and I remember the lights becoming squared off in later years and didn't think it was an improvement, but I don't remember the teeth gnashing going on then about it.
Then the C5 came along with oval lights and I don't remember any conversation about it at all. What bothered me about the C5 was that it was slower than the hi-performance c4's and the stated design goal was to be able to carry two golf bags to the country club.
After all the inuendo, I'm pretty sure that speed is the primary design goal on this car, as it should be.