I think wrinkles, when present in the base geometry, can actually create some distortion in the joints and lead to more difficulty with eventual morphing.  It does sound better to have them as an optional morph addition.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.