What is the figure mixer?  It sounds interesting.

In trick # 2, is there geometry assigned to the new group?  At first reading, it seemed like a body handle was being added.  If geometry is added to the new child group, is that geometry still retained by the parent part?  I've found that one can add a new child part with identical (but truncated) geometry, weld it to the parent, and use the parent morphs on both parts - useful for re-mapped nipples as breast body handles.  But that doesn't sound like quite the same thing....

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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.