I think its more an issue that with Elezen, again from strictly an artistic design PoV, is a bit awkward. You see, even if you can design a race with their own proportions, there still has to be consideration to the human figure. The reason being is that without some consideration, the design can fall into the uncanny valley. For the Elezen, it kinda does this a little bit with the in game models. Theyre designs are a touch weird.