I doubt that WoW is the reason for a potential bestial race. We already have one in the form of Raen and Xaela. Chances are a potential second bestial race would still be largely human in terms of their features but boast a few animal traits to make them more distinct. There has also been quite a lot of people asking for more masculine options for character customisation over the years. So it isn't as if the demand isn't there.