I can't tell from your online demo if there is any control over the trade off between only dropping curve points where tangentially required verses even distances between curve points. (I'm sure there is some shorter term for that.) I remember a talented animator remarking to me how he had acceleration control with TCB Splines that allowed him to achieve the same curve shapes but with control where curve points are emitted, giving him timing controls for objects in motion. He liked using TCBs for everything.