Put the mirror control option somewhere it DOESN'T stand out. At least make it flush and silver match to interior trim!

HID factory lighting. I was upset when I learned there was no HID option and only standard H7 halogen bulbs. Upgraded mine, love it.

NAV - Give us an option to upgrade to Navagation. Slide out single screen unit with matching silver.

Rear Cover - Rear hatch cover to keep people from looking into the rear window and seeing what we got back there!

Proxcimity sensory - Set off a short chirp when someone gets to close to the car! Keep finger prints off my baby!

Windshield Trim - Make option to paint body color. Not bad w/ silver, other colors its ugly.

(Cruise control) Leave it alone! It is in same spot on SLK and other Mercedies. One good reason why they do its, is to keep your hands at 3 / 6 instead of 10/2. When an airbag deploys, you don't want to have your hand forced into the glass or roof of car. Keeping them on the side of the steering wheel reduces injury when the bag is activated.