Mofoapoo, don't laugh but check all the books in Booty Bay... one alledges that Night Elves came from Humans and Trolls to begin with. Trolls and Orcs can be made semi-cute if you find the right face skins. Granted, most people can't deal with Troll feet but they are pretty tall to begin with at least. I forget if the NIght Elves or Trolls are taller when standing next to each other though. Orcs are a bit shorter and far more musclebound, sadly of course we all know there's no muscle growth in it or we'd need a thread in the other forum
Worst case if you want to try the witch doctor plus potions and gadgets thing you can always eithor Yarrr! or Flip Out! with a Deviate Fish anyway. With the Holloween thing going one of the tricks is an enlarge I think but it's rather rarae from what I've seen. ( And when I saw it it was a GIANT Tauren female on a War Wolf... scarred... for... life )