Unless there's been a big change in the latest SR, Poser Python provides no tools to work with falloff zones.  So a script would need to modify the pz3 or cr2 file directly and it would need to be written by someone who actually understands the mathematics used by the joint falloff zones.  I think Kuroyume figured them out, for his C4D plugins, and there's some discussion of the matter in the Python forum archives.  I don't recall that he ultimately shared with the rest of us exactly how the math works, however.  Matrices, that's all I know about it.  :lol:

I hope someone with a solid grasp of the matter can come along and address this question, however.  Such a script would be useful.  :thumbupboth:

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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.