If the 4th generation spot mirrors are larger than the 2nd and 3rd generation spot mirrors,
and
If the 3rd generation spot mirrors worked the same with mirrors up or down,
and
If the 4th generation spot mirrors really only work well with the mirrors up,
and
If there is more surface area on the 4th generation mirrors than the 3rd generation mirrors
then
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?