Please bring back the v3 flatten tool as separate and not comprised of the novelty “depth” tools nor the “polish” tool. The flatten tool currently unflattens surfaces causing artifacts that it can’t get rid of, none of the mystery meat labelled controls can change this, it just doesn’t work as well as the old one or even the one in Sculptris. The polish tools are even worse, they do the opposite and gouge out concave surfaces.
Please make a concession and bring back a simple working flatten tool, make it hard coded if you must rather than trying to shoehorn the new brush engine in to doing it.