Norman Stanley Fletcher,
Just read your very comprehensive explanation.
A previous mixed fleet employer used to go on a bit about min GS BUT I was flying the 747 classic and I felt, on that aircraft, trying to monitor and adjust for GS was too distracting and it was better to stick to the Boeing additive of Vref + 1/2 wind + Gust tapering to Vref + Gust at threshold.
Anyone regularly use the min GS system on a steam driven aeroplane?