I was playing around with the CSG box brush and was pleasantly surprised to see that we can extrude the faces and I’m hoping that more options are coming.
I would like to suggest a slight change to how the CSG is redrawn after extruding a face. In Flax, there’s a small delay between when you resize the brush and when the new CSG is drawn. Depending on how finely you’re trying to adjust the size of the brush, it can cause the CSG to flicker. UE4 has something similar, but they don’t redraw the CSG until On Mouse Up. My suggestion is to adopt UE4’s approach.