Yes, I'm very aware of this, and it's the first thing I change when reworking figures.

But as I said, proportions are a lot more easily changed than the other shortcomings of the non-DAZ figures.

MIKI-I had the most realistic out-of-the-box sculpting and proportions of all Poser/DAZ figures, yet the bad mesh and bad rigging made her pretty much unuseable.

Btw, don't cling too strictly to the 7 1/2 head mantra.

Even Default 8 1/2 heads V3 is perfectly realistic.

Unusual, but realistic.  ;-)