Sacrificing/killing characters is overplayed. Blizz needs to use a new avenue to move the story.
Just lost a few notable goblins, tired of it.
Also
The whole clease the maw “is just the start of your penance” is also kinda bleh. Just words to show Tyrande would never forgive her.
Cleaning the maw in my opinion makes up for more then what Sylv did to the NE’s. All it would take is someone or some group (forsaken) to push back and the “continued penance” would be over.