I thought about the universal reference figure idea for a bit. I think the reference figure would need to have a sufficiently dense mesh as not to lose too much detail in the transfer process. I'm not sure the original Antonia mesh fits that bill. I guess we could always subdivide once more, bringing her to 160k polygons or - I think - around 26k for just the head, but you'll have to decide whether that's still a workable size. I think a figure like V3 would probably not be so good because of all the poles.

I also think the reference figure should have a fairly simple shape. It should be defined enough for one to recognize all the important features so that they can be properly aligned, but not more. Antonia has some tricky bits, mostly around the nose, that might not be ideal for adjusted another figure to her shape.

So I'm thinking a higher-density version of Antonia with a simplified shape might do. And it doesn't matter whether the original Antonia changes. The reference mesh would be completely independent of the official Antonia.

-- I'm not mad at you, just Westphalian.