My opinion on this is that the typical concept doesn't really work. The problem: If you have a "basic shape" (size, position, mass distribution, etc) that you like, and it's not a mini size, then you better not move the model. Because no one can build such universal morphs that will preserve that particular shape, when the model bends forward or backward, moves its arms or even lies down (damn physics). What comes out of this can be admired on many sites (although I often ask myself whether those who create these images, which are contrary to any reality, have ever seen a living model).

My approach would be: morph sets that are based on sizes, shapes and masses and allow movement in all directions. Each specifically tailored to the "floor plan". Per set, not "one for all", because that only works in theory.

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