ExSp33dB1rd, I couldn't agree more. Stand 2 at LGW used to have a similar convex mirror so you could see your nose wheel and the paint lines. No need for complex calibrations, expensive electronics, a ground crew to switch it to the right aircraft settings, no waiting around for missing said ground crew, power systems and so on. But it wouldn't be aviation if it wasn't made over-complex and over-expensive... Combine convex mirrors with simple paint markings that all ground equipment must be clear of (including air bridges) that pilots can see easily (poles with flags at snow prone airports), and you're done.