This location is an example of "It takes a lot to get all the Bits and Pieces to fit and work together."
A couple of observations:
#1. Swing the superchargers around, so that the connection is at the LEFT instead of it being on the RIGHT side. The cable won't have as far to stretch in a triangulated dimension, it will be more of a straight line dimension.
#2. Install LOWER profile concrete parking wheel stops. As fstech writes, not every body has air suspension, and I have torn one of my rear air fins on my MS on a wood wheel stop at a State Park while charging. In this particular instance the degree and location of sloped grade where the drain is located actually is at the worse possible location. The wheel is at the bottom of the dimension, making the concrete parking stop even higher. One more suggestion/observation: the orange/yellow plastic wheel stops are visually easier to see, lower and less inclined/more forgiving if any of the soft plastic under-parts of a Tesla's airings come in contact with it.
The wheel stops DO address and resolve the issue any conflict with the stairs on the side of the platform.
The Wheel stops also resolve the issues of any conflict with the (future) structure while parking, but you had better be careful while using the rear camera while backing up. The Model S is a very long and low car with long overhangs.
Fore-thought and Execution are key to making a successful Supercharger installation.
One size does not fit all, and when somebody is looking to park, Supercharge and use the restroom, they might be less than focused and in a bit of a hurry.
Best way to continue that great day of driving and charging is to make it so there are no inadvertent accidental inconveniences.