Look at the feral and bear form of the Zandalari: just beasts you can fin around Zuldazar with tattoos and some minor jewelry. Still people in general seem to be kinda ok with that. Same could be done for those other races I mention: take a model already done and tweak it, like hyenas, manasabers and so on. For the balance form they could use the moonkin form with other colors, tattoos and jewelry. I mean, not much work compared to doing new races and models like the ones they are doing for Shadowlands.
It's funny how people can ask and ask for more effort put into one race and more and more options, but when other people ask for the same treatment for other races then they are told that that's too much investment... 8)