I've owned Lincoln Navigators, Land Rover Range Rovers, Supercharged, and LR3s.
Leased a 2011 ML 350 4Matic with the OEM towing package, front/rear park assist, side lane change assist, dual & rear AC, 20 inch tires.
As far as ride, it rides as any normal SUV, not as soft as a Range Rover, or the softer Navigator, but more like a sporty (hard ride) supercharged RR or LR3.
BIG TURN OFF...even though MB installed OEM Trailer Package, MB does not included a trailer light adapter to change the 7-pin (European) to an American 4-pin, or 5-pin. I've gone to many U-hauls/Pep Boys,/Advance/O'Reilly/Auto Zone/and others, no one sells an adapter; Not even MB dealers sell an adapter for their own cars!
Turn lane assist.
Better navigation system. an 8 year old Range Rover has a better system. Slow, have to input city name in single letters every time. You can either have the time to destination or the next exits, but not both on the panel. Lame!
Include a towing light adapter, or manufacture a 7 pin to 5 pin (7-5) or 7-4 trailer light adapter for your own OEM installed towing packages.
Your biggest market is the US, don't be so obnoxious as to not include such a simple accessory as an adapter for the US market on your own OEM installed towing packages.