As usual, deep in the blurry spectrum between outright and intended utility (aka layout algorithm), dataviz (tree depth) and art. I love them all, and as so often, the extrema are just a tiny param change away from each other! Pushing toward art territory often a great way to uncover issues and debug an algorithm. E.g. I had originally issues with propagating size changes of nested cells back up to their parent/ancestors (solved now)...
(Ps. also a teaser for next #HowToThing... probably out tomorrow)