I can totally support this suggestion.
I too have teleheating in Denmark. The radiators in my flat are fairly old and thus very large. So, I do not have the problem of the working fluid leaving the radiator too warm. I do however have very fluctuating temperatures.
As the temperature in my flat goes below the threshold, the thermostat obviously opens. And it closes when my flat is at target temperature. But, since the radiator is of a quite heavy making it takes in a lot of working fluid while open. After closing the temperature continues to climb, this is especially pronounced in my bedroom where the temperature generally climbs to 2,4° above target. Then down to about 0,3° below, kicks in and there we go.
Could I limit how much the termostat opens, I believe that could remedy the situation. It would allow for the working fluid to run into the radiator more slowly, giving off more heat and allowing the thermostat more time to register the rise in temperature, thus reducing the subsequent temperature hike. This on top of remedying @Grobsnelf's issue.
[And yes, @Grobsnelf, I did remember to upvote 😉