This simple technique is useful for animation. In fact, I redid the smoothing part of Anna, by changing from subdiv proxy to mesh smooth. When animating a character it is good to have the choice of displaying either the high-res or low-res model.

Following [2] what I did was to create a smooth custom attribute on the Anna's master node, with min 0, max 3, and default 0. Then I did a Mesh->Smooth on Anna's character, dress and hair. Using connection editor, I connected the smooth attribute to ...
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