Originally Posted by
dinnertime
What made every race different from each other despite being all humanoid is not only the racial features (Hyur being human, Elezen being elves, Miqo'te having cat ears and tail, etc.) but their proportions, facial features, animations and emotes. Overall, their characteristics.
It's very easy to tell a character's race just from close inspection. Heck, someone can tell if someone's character is a Miqo'te, Male Roe, Lala, Au Ra etc just at first glance.
Even if Au Ra are just "Hyurs with horns, scales and a tail", all they have in common is being humanoid. Their facial features, animations and etc. are very, very different.
I don't see how Viera couldn't be different from Miqo'te just because they both have animal ears. If they can give other races different characteristics that separates them from each other, I'm sure they can make the same with Viera.