at least they had the design competency to base the xk off of a good looking car like an Aston Martin
This is wrong, they did not base the new XK off of an Aston Martin. It was more of an incremental change from the last generation XK, which was an escape from the hideousness that was the XJS, which followed the XKE. The XKE was ruined in the series II and III incarnations, but the original '61-'67 models were (arguably) the greatest looking car of all time. Although I will admit that the new XJ probably has Henry Lyons rolling in his grave. I'd put money on the idea that within two years the taillights will be fixed, the grill will be less upright, and finally that stupid carbon fiber strip or whatever it is on the rear pillar will be done away with.