I think the only way they can improve things is when they do something completely different.
The Victoria Concept is old, I mean the only thing you can do about that figure right now is updating some flaws, but I wouldn't give a dollar for another new version of a Victoria 3D doll.
It looks to me like they're running out of Ideas and  just renew old stuff.

Don't get me wrong, I like V3 but I prefer working with V2 because it is a waste of time to inject zillions of morphs first before you can actually DO something with her.
Besides, she uses so much space in the pose folder that there is almost no space left for other 3rd party stuff.
Okay, V2 is not as realistic as V3, but I am not into that super-hyper-ultra realistic fashion anyway.

I wouldn't buy V4 anyway if she would be just available for DAZ Studio only. I don't like limitations.

P.

Excuse my english, I do my best, but It is not my first language.