K (as well as X and V) is supposed to be a fractal, so the pattern isn't just arbitrary. X and V are too dense in my opinion and could use a lower branching fa

K (as well as X and V) is supposed to be a fractal, so the pattern isn't just arbitrary. X and V are too dense in my opinion and could use a lower branching factor, maybe base 2 for consistency. K is better in this regard, but they didn't recurse correctly which makes it less satisfying.