Glad to hear that "Angled" cusp style is the highest priority right now! It's probably the biggest thing missing functionality-wise. I'm not surprised that it'd take some time to code though.

By the way, the interpolator type I tested most right now is "CubicBezierJohan", yes. Currently it seems to be the algorithm with

the most predictable results. CubicBezierFit and SpiroInterpolator do seem to produce some interesting results though, I'm still trying to figure out use cases.