If you liked repulsive curves, you may also enjoy repulsive surfaces: https://www.cs.cmu.edu/~kmcrane/Projects/RepulsiveSurfaces/i... Deep dive into repulsive geometry here: https://youtu.be/dtYGiCpzzbA
Nice talk! This seems like it could be an interesting tool model real phenomena. Have you considered if you can invert this to derive which constraints and energy function best match a particular sample? Say, take a video of cars entering and exiting a highway ramp, what constraints and energy functions best model the paths taken? This could be individual as well, for example a particular car may be driven "aggressively" according to humans, if you derived the constraints this way could you reliably predict humans' scoring?