I don't believe there are actually any LORE REASONS to have a new race. This is a heavily-story based game, unlike most other MMO's out there. That means that having a Level 1 of some new race has to make some kind of sense. Having some new race that originated on one of the other continents move in makes some sense, as long as you actually have members of that race running around the game world BEFORE they become playable characters.

Having some new race suddenly show up in 4.x or 5.x story, when a level 1 never encounters anyone of that race, does not fit this bill. Unfortunately, that's the route they chose to take with Au Ra, which showed up at some point after 2.0 but as soon as Yugiri's race was revealed, before Au Ra even had time to move into Eorzea, you could make one. It made no sense, and it would make no sense for that to be repeated.

That said, what is the fascination people have with animal ears and tails? Or with being "cute"? "Cute" implies youth, in a pretty-but-too-young-to-be-beautiful sense. Can we not get "beautiful" instead of "cute" sometime? I know that beauty is in the eye of the beholder, but when the devs go for "cute" that's ALL you can get from it.

And I'm sorry, but anyone young enough to still be, or still be called, "cute" is not old enough to go out and slay monsters for their level 1 class quest. Or would parents here trust, or have trusted, their children at 5 or 6 years old with deadly weapons and no adult supervision?