the side profile of a 4th gen is one of the more timeless designs out there.
id love to see the 6th gen as an evolution of the 4th. i think the worst looking parts of the 4th gen are the bumpers (lt1 is somewhat outdated and ls1 is somewhat boring), the rear bumper is definitely 90s, and the coke bottle profile is too subdued.
taking the general body style with a wider wheelbase/shorter overhangs, overall smaller, and some modern bumpers and youd have a great looking car.
basically keep the super raked windshield, hatch, coke bottle profile and slanted b pillar.
i suppose thats a c6 though.