Yeah, "Unimesh" idea was basically just marketing buzz.

The M2-V2 male-female split was much better.
(And M2 still made a very sexy woman as Stephanie 1)
Men and kids don't need high rez boobs or high rez crotches.
But they need muscle/bone detail.

And women don't need that much muscle edgeloops but more vertices for the "womanly" parts.

But I still based my work on the 3rd generation meshes because they have the largest texture support ond the overall rigging is better.

But once you "specialize" your figures and loose all the bodymorphs and most of the head morphs, the footprint will get A LOT smaller.