I actually posted years ago I would love more back wings rather than butt wings on gear when some other butt wing outfit came out and we'll just say it was not a popular request. Apparently the anime crowd especially really likes their butt wings for reasons I still don't understand since all the reasons I got for how we have to have butt wings and nothing but butt wings came from anima and manga examples. So I just blame it on FFXIV being a not-anime-but-still-leans-heavily-into-anime-tropes kind of game.