I'm not sure how feasible the idea would be, but IIRC an animated shader will have a parameter dial available for use in the Pose Room.  Theoretically such dials could be used to animate a series of displacement maps to vary muscle detailing in different areas as a figure is posed, using standard ERC or Dependent Parameters.  Any parameter dial should be able to be linked to ERC controls.

Which still wouldn't address the fact that displacement detailing can't address all needs as well as one might like.  :sad:

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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.