I think that in some way, Blizzard had thought in a way of the Alliance (Night Elves and Worgen) become inert!
God forbid the alliance to have some kind of victory over the Horde!
Included regain control of lost areas in previous fights, even if in lore, the Horde has already left them!
We just lost territories and towns! We never recovered them! And I am very skeptical that Blizzard’s narrative allows such things!
It doesn’t look like the story the Devs want to tell about the rising horde and the ally wilting!