Having now watched most of the cutscenes involving Yugiri, I came to a dreadful epiphany. WHATEVER race Yugiri is, it will most likely never be a playable race.

Yugiri makes a big deal out of the fact that she covers up so that the people of Ul'dah won't be shocked by her appearance. If you, the player, are walking around uncovered in Ul'dah, speaking with her in cutscenes, and are the same race that she is, those cutscenes will make no bloody sense at all.

There are ways to get around this, I suppose; Yugiri could be hideously mutilated or something, so she's not trying to cover up her race, but rather her shocking injuries. Even so, I think this indicates bad news for folks hoping to get a sixth race to play as.