I think V4 was a sort of failed experiment at creating a better "neutral" figure that could be adapted since a lot of people always said that V3 always looked like V3 and it was hard to get rid of that look. At least in some places. A lot of people like big eyes so make them big, with the option to dial them smaller, a lot of people like toon so make her a bit more toony with the option to make her more realistic, etc. That, I know, was the concept but I don't think it worked out that well. I still can't stand her and I hate that I would have to include the eye size morph in addition to every custom character I did, etc.

Some people do like her though.