Thanks again for the comments.

Another test: As Luke and Laura were directly derived from David, it's pretty easy to recreate them with a bit of scaling and morphing. (I mostly copied the Dylan freebie morph)

The neck needed an extra fix morph though, as shortening it to 75% turned out a little too much for Poser despite the new scaling map I made.

I think I'll create another version of David-WM with a natively shorter neck and a bigger head for younger characters so I don't need the fix morph anymore.

I have no real need to dial men, women and children from a single mesh like you can do with Genesis. Three separate "base" meshes will be convenient enough.

I just want them to be able to share clothing without problems.