might just be me, but going over a set temp means waste to me, i agree that i will just get the clothes done more quickly, but i like to go as precise as possible
OK, but the more pertinent question is do you pants care as much as you do? 
If we have a simple thermostat sensor controller that might have a control hysteresis or +/- 5 degrees Vs a P&ID control with a nice RTD sensor that might give a +/- 1 degree variation in control. Where is the wasted energy to be found if your drying by either a simple timed cycle or a 'it's dry enough sensor'? Recall that drying cloths is not a 'fast' process, takes 30-60mins normally depending on load size I would think. Having the process variable temperature varying +/- 5 degree Vs varying +/- 1 degree centered on the same setpoint temperature is not going to change the batch size drying length or energy usage. I don't think on my electric dryer there is any attempt to control the temperature at all, just straight 220 AC to the heating element. There are over-temp safety cut-off switches, but that is for malfunction or major air flow blockage protection. Such simple dryer like that are simple open loop control, with just the user selecting a drying timing they think it will take. A closed loop control based on a 'it's dry enough' sensor would be a more beneficial method and I believe some dryers have that optional control mode?
Lefty