Thank you! It was a lot of fun to make the website and see all the methods in practice after having just looked at the theory for a long time :D

> have a separate source node for each x, x^2, x^4 used

Do you mean a graph like this R&W? https://thomasahle.com/fast-polynomials/#ex=bessel&mode=Q&me... there are nodes labeled x2, x4, x8; but it's the output of multiplications, and we want to make the number of mults visually clear.