Just a thought.
If Vorrik does succeed in reuniting his people, I am not certain Talanji would be accepting of them joining The Horde. I know she is one voice of the council but there are others who may side with her if she is against it.
The Faithless Sethrak did kill many of her people and were a part of the assault on Dazar’alor as well as Zuldazar in general.
She has trouble trusting. I am not sure she would have faith in them not to turn traitor again.
Again, just a thought as I redo the quests in Zandalar.