Better buldoze sloping/flattening sand

After some play through with bulldoze, try to make more realistic as possible road construction (try manual system as well). I'd like to have surface (snapping) (A→B) so able to make smooth sand terrain or slopes if in the feature able to have mountain terrain or in a flat terrain as well. Sometimes fill like a knife try to cut the butter.

Another feature will be awesome if rolling has featured to lay sand better, not only asphalt. (like real construction road vehicle use to compact sand etc.)