EClark1894 :
I tried to think how to explain every thing to you where you would understand.
but it would take a book and I'm just not that good at explaining.

But certain things happen that changes every thing .
and it's a majority rule that make s the rules such as topology and how to make characters.

Main events in CGI time line.

: Started going good for PC's around 1995 give or take a few years .Max, Softimage, LW.
Buy trail and error the users made all the original rules.
Each app had it's own set of rules.
There was a lot of This vs That App.
Some where along the line we got Maya n C4D years latter.

: Softimage ,LW SubDed tri's to smaller Tri's but Max ,Maya,C4D did not.
So The 100% quad rule was placed in effect. buy all the users.
:weight maps
: zBrush displacement maps.
Changed everything 2001.
: retopologize. Changed a lot.

2014 most have multiple app's and there's a lot less This vs That App.

The hardest thing to model in CGI is a good character and a pretty girl is about imposable.

1998 maybe 5 could model Posetta.
2014 Maybe 50 could model Roxie.

Traditional Artists can name the 600 muscles and the 300 bone etc etc in humans.
But we can cheat with scans now ,so. that changes the rules again.

 The point I'm trying to make is rules change depending on Tech.
& wich tech you use .

DAZ uses unimeshes tech cause that's what works for them and there software and morphs.
for a all in one all purpose character.
It's one way to solve the problem of I need a lot of character fast n cheep.
as far as I know DAZ  and MakeHuman are the only ones that use a unimesh.
HiveWire3D might half to wait n see.

There's different rule to different app's & Artist.
& like the saying goes rules are made to be broken.
Dawn's modeled with some Tri's and a 30,000 polycount.
So you can SubD Dawn in Studio & Pro 14.
but if you have a older Poser that does not SubD ,Dawn still works.
So Dawns made for all the Posers n Studio's.

It's there solutions to there problems and that's fine. there problem ,there solution.
Poser makes different meshes .Roxie's own mesh & Rex's own mesh and that's fine also.

Some problems have multiple solutions.

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The Artist that will fight for decades to conquer their media.
Even if you never know their name ,your know their Art.
Dark Sphere Mage Vengeance