@Alien - Very cool solution! I wrote a similar python node that for another post that uses offset to get to a target surface area (which you get using the percentage calculation in this case). The main difference between the solutions, is that you are using a linear step for the resolution, and I used half steps which makes the curve more logarithmic.
I’m inspired to see how you made your own surface area calc! I would suspect it’s more performant than the alternate surface by patch, then get area.