Many posters are saying that the sag in the side window is detrimental to the overall look of BK because it breaks the flow. LOL.
I would say you don't know a thing about the car styling or you are short sighted.
Have you ever noticed how the head lights and taillights are shaped?
Stand back and take a good look at it. The sag is actually harmonious with the entire look of the car. It is the signature of this car to be different. Without it you may also want to vomit because it looks so plain and boring.