Onshape has a lot of powerful ways of interacting with mesh geometry including mixed modeling and the ability to scan directly in Onshape using the mobile app. The new Constrained Surface feature is also invaluable for making parts that fit perfectly onto 3D scan data.
Attractor Pattern Feature
https://cad.onshape.com/documents/ca03eaf542826bb98f6cc90e/w/dda165f92e2ad786bd53d97a/e/9b97d9037f0e0bb481cf6111