You can't please everyone but since there are no individual cooling coils and every sleeper compartment has it's own heater how hard is it to figure this out? You make 22C/72F the target for the car itself and people who think that's too cold can either bundle up or turn on their own heaters. Everybody wins.
72 is too hot.
I keep my house at 66 in the winter when I'm awake and 60 while sleeping.
I do the same (well, maybe a couple of degrees different), but I'm usually still cold in the daytime (have plenty of covers to keep me warm at night). But I'm trying to save costs. With the recent cold spell, I've gone to the mall not just for my walk, but to warm up.
I can live with 66 myself if that's the new 72.
I'm just trying to find common ground since I was sweltering in a stuffy 80F sweat box on the CZ with no resolution.
The SCA refused to turn down the heater and even went so far as to claim it was impossible to adjust the temperature.
I understand it's not possible to control with any precision, but to claim it cannot be changed at all seems odd.