Playing around with her a bit more my initial impression still stands; this is a nice figure with some nice  features, but I'm honestly a little disappointed; I really haven't seen anything in her that I can't do with V3 at this point. I guess a lot of it has to do with expectations; since she was named "Victoria" I expected a lot more compatibility with the old figure. If she had a different name,  it wouldn't be such a big deal; but with no real backward compatibility with V3 (sorry, but that lame V4-V3 figure doesn't count) V4 is kind of a disappointment to me.
V3 is for me, and I'm sure with a lot of other people, my universal female base figure. I actually like the fact that she's pretty "bland" out of the box (I never leave her in "factory spec" anyway); she can be anything from a buxom super babe (rumor has it, she likes to hang out naked in temples wielding swords), to a fat grandmother to even a guy! Since she is a base figure, I don't want her to be too highly stylized one way or another. There are hundreds, if not thousands of morphs, characters, textures, and clothing items for her, and she can be pretty much anything you want. Given that V4 is only a day old and V3 has been out for years, I know that this is not a fair comparison, but I really question Daz's decision to take the clean slate approach to V4. From what I can tell, the improvements in the mesh don't really seem to justify changing her body form so much.
If she was compatible with V3 content, it V4 a no-brainer purchase for everyone, but as she is,  she's more  like Jessie, Miki, TY2, or S3...while all nice on their own, they all require a substantial investment in supporting materials, and they still don't have the flexibility of V3. I know WW can help, but it is not perfect - it's great for what it does, but nothing beats "native" clothing. I guess the market will decide how well she's going to do, but with so much invested in V3, I don't think I'll be loading up on any more V4 content anytime soon.

Sorry to ramble, but in sum,  I think my major disappointment is more about expectations (fairly or not) because she carries the "Victoria" name...I just don't see V4 taking over V3's slot in my runtime anytime soon. For now, I guess she'll just be another naked, sword-wielding temple dweller with a bobble head who needs to eat a hamburger. ;-)