Most of those scales have already been tried, for example "C" scale in the
1960s. Unfortunately people generally start in the hobby with whatever they can readily buy, so whatever already exists is what they continue with. 1:100 scale on 14.35mm gauge isn't intrinsically better than 1:87 scale and 16.5mm guage, or any other combination when one is buying off the shelf. For that matter, 1:87 is no better than 1:87.1 or 3.5mm:304.8mm if you're just buying off the shelf, as David obviously does. There are only problems when either one attempts to mix models built to different standards or when one needs to or attempts to build scale models.Greg.P.