What a fun article! If it were, I would probably have tried two simpler tweaks: 1. Instead of bothering to compute tangent frame sweeping along the path, just

What a fun article! If it were, I would probably have tried two simpler tweaks: 1. Instead of bothering to compute tangent frame sweeping along the path, just use a fixed frame that's tangent to a line drawn from the start to the end point. (And then pick a random fixed rotation angle.) 2. Just use value noise instead of simplex noise. Or, hell, just stack a couple of sine waves with randomly chosen phase and frequency.