"Mirror too small and too low"
so you want to induce another ( though no car actually has blindspots its just bad mirror management) blindspot?
Have you ever tried to see across (right side) of an intersection when mirrors are eye level? there is a HUGE missing area BEHIND the mirror,, especialy those huge toyota mirrors, which I gather is what you want..
Having mirrors below eye level IN NO WAY compromises its ability to reflect stuff.
Have you ever wondered why all production motorcycles have mirrors below eye level?

