Aren't the hit point positions themselves (and thereby our hard-coded deltas which derive from them) valid only for a correlation using two specific actors with two specific deformed shapes?  Once the actors are differently deformed, or re-positioned relative to one another, you're dealing with a separate correlation.  When I posted a bad example for the .vwt weight listings, above, I accidentally drew on a .vwt file for the same actors for which both were differently morphed.  The result was wholly different tri and vert correlations.

So I guess I don't understand what you're saying, in commenting about adding the distance.  Hmm.  I gather you don't like the idea....  Bummer.  :(

Regarding the memory issues, the Python interpreter for 2.4 and earlier versions was apparently buggy, which results in certain conditions in which there can be leaks.  One of those conditions would be orphaned references such as I've been on about.  Or that's what I gather from the info at the links.

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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.