So this was briefly mentioned but Viera are a creation of another artist. Does anyone even consider that female only Viera is a courtesy to Matsuno which he has so courteously lent his lore to? Maybe he should screw with Sakaguchi's vision of Terra. Or borrowing and screwing with 9S's lore after the 24 man without consulting Taro. FF14 is borrowing Viera at the request of the fan base and maybe just maybe there were some limitations to that.