While sounding science fiction, it's a very real possibility.
If Azeroth is truly damaged after the Jailer's attack,
it stands to reason that the Titans would have some sort of failsafe in place to stop her from being fully corrupted. Mother's actions during BFA kind of showed just how extreme those actions could be (we're pretty much viewed as an infestation). We don't know all of the Titan facilities in Azeroth,
and some could have been built specifically for the purpose of a last line of defense.
In addition, there's been this occurring "plot" since WoD, and it's run through BFA;
https://wowpedia.fandom.com/wiki/The_War
A mechanical force that adopts titan technology, and embraces
a goal of destroying organic life on Azeroth in order to save it could be a very formidable adversary.
While some may have issue with it,
we've never really faced that type of antagonist before, and it could be an interesting direction to take the story. I know some are already expressing complaints about a dragon story or a cosmic story. This would be something fresh for the franchise. [/U][/B]