I'm still trying to understand the entire issue with Jenny as it stands too. Roxxy went from valley girl to exactly what these people wanted along with the big tits just like Jenny.
Watching the entire story, she seems far more compelling with everything she's done in 18.0. It's not the same as Roxxy and she has her own hurdles and hills to climb and choices to make.
Personally, I think Roxxy could be improved further if you don't have the big blow off with Dexter, but that's my take. The story and character of all three make sense. But it becomes really bland when they end up the same at the end...
Iunno... Why does everyone want another re-telling of Roxxy instead of Jenny being improved upon? Just makes no sense...