I thought it might be an interesting idea , to be able to build a smoothing cage with points over a sculpt to even out/smooth a large surface area. I thinking for car body sculpts.
The cage will try to smooth /even out the surface between the points. Moving the points normal to the surface will adjust the surface below. I think the points of the cage should be allowed to lock position so they only move normal to the surface to keep editing simple.
Sorry to post here. It would not let me post in feature requests.