The fuck, I would "hate" them even if they were introduced in XIV as brand new characters. They don't bring anything new to the table, bland design, basic gameplay and generally come off as annoying in Alice and Mui Mui case.
I call them Pachinko because that's where they came from, when I say that you automatically know i'm on about Mui Mui, Love Heart and Alice its faster saying that than writing their names individually.
At least Mui Mui and Love Heart get solid representation. The Love Heart in that Chinese tournament was cool to watch.
EDIT: Isn't Love Hearts game Sky Love or whatever passed onto a different company? idk if she'd make it into the next iteration but time will tell.