It's kind of sad that this thread has continued for 40 pages, despite the very good arguments against this silly idea. It seems that people really don't even have the tiniest understanding of what it could mean for the game if such a thing was included. Allow me to spell it out once and for all.

Ignoring the select few who would find ways to sexualize their underage characters, many countries have strict policies regarding the depiction of children in media. FFXIV is an online MMO which crosses country borders and therefore has a lot more restrictions than a single player Final Fantasy which can have some localization changes on foreign versions.

Now, the simple fact that it CAN be misused would raise the game's rating in certain countries and outright ban it in others. This is a simple fact. As an example, Tera has their Elin race which look very much like children, and they were made to censor the game to release it overseas because of the skimpy nature of some of the clothing items. These are characters which lore states are over legal age, but because of their appearance were censored anyway. When you have characters which are young in both appearance AND lore, that's an even bigger red flag. And I remind you that FFXIV is a game which gives us Colosseum armor and bikinis.

So no... a thousand times no. I don't even know why this is still a debate. Just no. Why must players ruin lovely little Easter eggs like this by trying to crowbar them into the game mechanics? It's debates like this that will more likely make them reluctant to add in nice touches like this in future.