This is a feature request with high prio for me. It makes all the difference in architectural visualisations, for which I want to use RC. These blobbery surfaces really don’t look good, as if the house was burnt out, or bombed.
I tried the Simplify Tool, but it makes the corners still not straight, and it made an incorrect texture map, and it still wasn’t completely flat. And it was a lot of hassle to place a cube around the surface.