The concept sounds good, I shall await the initial effort to offer an opinion (not like my opinion means anything to anyone else).
So, to toss out more ideas on a premise that I saw go by... if you go by build dates, the original Cabbage Patch Kids are now ~39 years old (released in 1982, not including whatever age they they were supposed to be). The original 12" G.I. Joe figures started in 1964, and the 3.75" started in 1982 as well, and included a few females. There's more than a few candidates for a small/size difference, older than 30, doll/toy based VN.
I'll go back to my fuel/boost maps now. I just had to get that out of head to make some room.