Look, one of the cool things about the Warcraft universe is the diversity and amount of races. Also eveyrone has their favorites and so on. But it's literally ages since we had races added to the game, and i' am one of those old stubborn guys who are still baffled Ogres aren't playable.
So if the problem to give us new race is because they want to create a huge starting zone, i would much rather have a smal, or even no, starting zone.
Just gives us a small introduciton to who these guys are, what are we doing, why we are alliance/horde, and then we move on with the normal world content.
Also because if we look at the last starting zones created (Pandarens, Goblins, Worgens) they ar eall GIGANTIC zones with a slew of quests and scripted events. It's really great the first time you play, but after that and you know the story... it's rly jsut a much longer starting zone to go thorugh.
A bit too excessive in my opinion.
I would much rather have my Ogre starting from the damn Orc zone taking apples from cactuses then have to wait 6 years for the right content to be made.
---------------
On a side note, there are a LOT of races "addable" to the game with alreayd good starting assets to work with, saving much dev time.