Thing is, that 90% of the range is going to mean that you and I pick a different range from "hottest" to "coldest", right? So it wouldn't be beyond the wit of

Thing is, that 90% of the range is going to mean that you and I pick a different range from "hottest" to "coldest", right? So it wouldn't be beyond the wit of man to fit a couple of setscrews, possibly accessible by popping the knob off, to set the "low" and "high" stops for the thermostat in the shower valve, right? You'd think, eh...?