Yeah that makes total sense to only have two levels for a GPU.
I suppose you drive your car that way too? Either idle or pedal floored as obviously there is no need for anything in between!
Best answer for the op question ever , sometimes i wish we have a like button on this forum
You always have the merit button which kinda acts like the kike button only is a bit more privileged as it boosts the other person rank. I think keeping the miners in medium performance just like constantly pressing that pedal of gas in your car is the best to do.
Everyone not only in mining but in every other category is trying to find the perfect spot between power and balance.