i really think if they would do something like "pre-purchase early unlock for allied race in legendary edition for 80 bucks" they should add something thats popular and different from what we have in the game.
from my point of view we would have as main choices:
- Tuskar
- Ogres / vrykull
- Sethraks.
any of those 3 would make HUGE sales. lore can be written easily having all class all races combos and dracthyr coming out of nowhere even if people really want bard, tinker or dark ranger as new class show us that they can come up with anything, an high inteligent ogre tribe ( they are not dumb, they created a full empire in they continent) Tusk and sethrak could be neutral, alot of people asking for more netural races, even murlocs could be something ( there is a quest where u help murky rise a new generation of inteligent tadpoles in legion)
but i mean, its almost certain that we are having a new race or customizatino options for elfs in next patch. with this, i think tha chances for the leak been true in this part are really low now.