For the generation of simplified Bézier paths, I hope they consider the new methods in kurbo[1]. These have some fairly fancy math behind them and result in pretty close to a global optimum in terms of the minimal number of segments needed to hit an error target. They don't do implicit low-pass filtering, rather treat the input as a source of truth, but perhaps options could be added for that.

[1]: https://docs.rs/kurbo/latest/kurbo/simplify/index.html