Seems like a problem that doesn't need a solution, just a bit of planning required.
Indeed.
Who spends their time staring at a panel or waiting for a caution to light so you can work out you are near a limit.
In the 2 hours or so that these aircraft can manage to fly, density conditions can only change so much.
You plan performance and loading for the highest and warmest condition in flight.
After that, fly with some accuracy, preferably into wind and the aircraft will perform as expected.
When the lever meets the armpit, an exceedance approaches.