A suggestion regarding height.

[Ditto]

No, pretty sure Miqo'te having a height difference is because devs hardly ever bother to care about short men or tall women, it's kinda common in when people make stuff to do this. Really the only lion like thing about the Miqo'te is Sun Seeker culture, they're pretty generic Nekos outside of that. Plus I mean, if that's the case, why are Auri women so short? Succubi/Reptilian-esque-things aren't tiny little things. Same could be said about the Elezen (IE Elves) and Roegadyn, why are the women for the stereotypical "tall" and "Giant" races still shorter than the guys of that race?

Au Ra are demons.

They're not reptilian. And there are no rules on what size succubi can be. If anything, they're fairly normal sized, else they wouldn't be able to do what they exist to do. And if we're talking about the succubi mob, they're pretty small. Only the boss ones have been big.