I think it flows well with the rest of the MKZ. I like the chrome finish on the exhaust tips. Whether the exhaust is connected or not is not my concern. I won't be going fast or expect any performance gains of them anyways.
well the panoramic roof is not standard but a $3000 option if you want it. To me it just means a better accessible spot if you were to replace the third brake lamp not that you should ever really come across that but better than having to take the headliner apart to get to it.
The circle indents on the rear bumper are proximity sensors for when your using your rear camera and parking backing up.