I have several vehicles with ASS and I automatically disable it. Use it/don't use is entirely up to you. I think it is an annoyance, but I get the theory of saving fuel. The vehicle engineers compensate for the extra stop/start cycles by having a more robust battery and starter components.
The B2 Combined Test Force, Air Force Flight Test Center, Edwards AFB, California was/is responsible for flight testing the engineering, manufacturing, and development aircraft on the B2 program. Whiteman AFB, Missouri is the only operational base for the bomber.
Thanks to the OP for his efforts. I'm in the "if it ain't broke, don't fix it" camp as well. The Mav is behaving as advertised, with no occurring issues. It is a simple machine, relatively speaking, Just an FYI, I've updated other high-end vehicles and found it would make unwanted changes...
There isn't a way to quantify an answer to this unless a detailed engineering analysis is made. Using calibrated instrumentation, perform real-world tests and measure two nearly identical Mav's, one w/o said windshield and one with to see what the difference is. Lab analysis would be performed...
I enjoy reading a reply based on fact-based technical information rather than subjective "seat of the pants" opinion. My take is simple, since I am not a cheapskate when it comes to my vehicles, I go with the recommendation in the manual.