Tiny spoilers for the Nier raids and the new treasure dungeon if you've not done those yet I guess.

I keep seeing things that are basically almost complete mounts but they're just not mounts implemented in the game: The flying disc from the old treasure dungeon, the pod from the Nier raids, and now the wings from the new treasure dungeon. They have a model (I think it's the same as the new wing fashion accessory) and an animation while you're flying (the wings flap) it feel like the only thing that's missing is the item in game to unlock them as a mount...