I am going to try putting the dressing on hot potatoes. I always wait for them to cool, but it makes sense that they would absorb more dressing while still hot.
Just understand that the potatoes will not have that ‘cut’ look that most people like and are used to. It will be much more crumbly. The best food market in New Jersey - Sickles in Little Silver - now sells it along with a more traditional waxy potato salad.