Third clans would be the most reasonable outcome imo, considering even a literal human but with animal ears is too much to handle/code properly as far as gear, glamours and hairstyles are concerned. Might as well just stick with what we already have and keep polishing it.

That said, in a perfect world, all races would've gotten the Hyur treatment: Taller Xaela ladies, "Feol" Viera, more feral Miqo or humanoid Hroths, etc. I still don't get why Hyurs are a 2x1 race while everyone else is little more than recolored copy+paste models, makes the whole 'clan' thing rather redundant.