When I bought my first F350 back in 2011 I felt there were a number of little things that made Ford a better choice for me than what GM and Ram were offering. Things like power tow mirrors, tail gate ...
"Wouldn't it be useful to be able to conveniently and remotely adjust the position of a larger surface area spot mirror so that the spot mirror would be able to work just as well in the mirror down position?
Maybe, but I doubt it since it's narrow and would NOT give you the same coverage with it down.
My basic point is it's adjustable down or up by hand and once you adjust it it never gets moved.