Look at the Rendo galleries if you want to know whether or not the girl is a good idea.  Out of the thousands of images posted on Rendo, how many use the girl?  Next to zero.  How many use A3 and V3?  About 90%.  If they were smart, they'd just forget about the girl and focus on Aiko, maybe incorporate the girl into Aiko or something, since they're both cartoon characters from different genres.  The girl was a terrible figure that always looked really bad anyway, which is why no one uses it.