Honestly if wings were added I would feel like this game would start turning into another chinese/korean mmo. Wings really wouldnt make much sense unless they were like the jetpack experiments, or if AuRa had wings due to their origin. But if AuRa were given wings then everyone would bich and complain that its unfair lol. Its best to stick to actual flying creature mounts.
(FYI: I have nothing against wings in games, personally love them in previous games I played but it really doesnt make much sense to have "wings" in this game.)