I definitely like the side mirrors. I find the existing ones acceptable, but a downgrade from my '00 ML320. The new wheel design looks great too. That prototype vehicle definitely has Airmatic as it is riding about the same height as mine does in Sport mode.
As far as the chrome window sills, I already have that, along with the LED taillamps
I do like the chrome roof rails, but suspect that they will be prohibitively expensive as a retrofit.
The hood design (not shown in this pic) is also changed, with a few more "curves" similar to that of the X5's hood.