While I'm not one to start talking about making models sexual (tbh I never want Viera in ffxiv), there's a difference between having the option for a sexualized adult character and a the option of having a sexualized child character, hint the term "loli" has huge connections with the sexualization of children.

SE is already getting close to that "looks like a kid BUT DON'T WORRY IT'S NOT" with Lalafell (And I'd say arguably Auri women) let's not push it further. The Viera concept art posted earlier was suppose to be Viera children. Unless if SE planned to limit a whole lot of gear (specifically stuff like the bunny set or any set with unnecessary skin showing) for people playing children characters, which wouldn't happen, you start to get into creepy territory with your children PC models running around in fishnet tights and bikini tops.