I tested the neighbor weights, creating a .vwt file using the alternate weight calculating code in the attached.  It basically works, but does suffer from definite precision problems, as I feared.  At a 1.0 setting, the resulting morph is very jagged, but the basic movement has been created.  So this is not a useful idea for morph transfer, and the current triangle edge code is validated!

The attached is presented just so you can understand what I'm on about....

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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.