
The smoothing feature seems to worked best when selecting two adjacent surfaces. For a good workflow, after the smoothing is performed, the two selected surfaces should automatically deselect so that you can move onto the next pair of surfaces to continue smoothing.

I understand the point. The reason why we leave the two selected (similar to when you smoothen 2 or more edges) is that smoothen is an “additive effect” function, i.e. if you click on the button again it will smoothen more, until you reach an “optimal” smoothness (optimal by some measure that I cannot easily describe, although it has a rigorous mathematical definition). You get faster to this optimum if you smoothen with a higher smoothen strength (which you can set separately from the Settings menu. So we thought that often you may want to click repeatedly on the smoothen for the same pair of faces, and that it’s thus more convenient to keep them selected. After all it’s easy to deselect them by hitting escape, for instance. Does this make sense? Interested in your opinion on this.

I see, I’ll try that workflow. To compromise I wonder if the community would like it if: you click on the background to deselect quickly, or click on the surface to increase the smoothness as a quick use. I am curious as to how the smoothness works on a personal note. I wonder if it’s some kind of hessian that plays around with the end bounding curves until the combined sum of normal functions on one surface increases overall.