Originally Posted by
Gaaz
About the Broken Shore, I somehow lack the feeling that even if ALL warriors (minus leaders) of both factions died, it would be the end. Maybe it is the lack of scale in the cinematics, but it seems to me that Horde or Alliance are supposed to consist of more than a few dosen soldiers. Or even a few hundred. So, her fleeing and abandoning everyone, Thrall included, would not pose a threat to Horde as a whole, just shift a balance of powers towards undead faction. And she literally could do that with no consequences - could just grab Voljin and gtfo with same outcome.
That said, undead were always a faction "with a plan". Undead scheming is way more elaborate and long term than all other factions of Horde and Alliance combined.