Stormwind is the only major human kingdom remaining on Azeroth, at least that we know of. What’s more, the other ones that are playable (Kul Tiras, Lordaeron, and Gilneas) all offer stylised variations of humans.
Whether that’s being undead, a worgen, or just big and burly.
Shortly put, you can’t simply be a regular human unless you’re from Stormwind. I think this is a shame, because there’s so much cool flavour, lore, and culture to be found in the other kingdoms. But to gain access to it, you either need to swap faction and die, be cursed and turned into a worgen, or grow several sizes.
Out of the many possible ways they could solve this, I think the best one would ultimately be to go via the Void Elf / Blood Elf route. Remember how they both got more High Elf choices, to make everyone happy as a compromise?
Well, simply give Worgen, Undead, and Kul Tirans access to an alternate, smaller human model.
- The Undead one could be based around Calia, Nathanos, and Jaina’s brother Derek.
- The Worgen one could just be their regular non-Worgen form, but going the route of Tess Greymane. They still could be cursed, but maybe they could have the human form be the default in the login screen and so on.
- The Kul Tiran one could be the slim model we saw back in Battle for Azeroth, and simply a regular human model with a few cosmetic options added to make them look more like islanders and sailors.