Simple question. The Jailer and Sylvanas are being propped up as the main antagonists for Shadowlands, or at least what we know of the story so far. A plot twist halfway through that shifts the direction of the story is very likely IMO, and I don't think the story will have both of these characters continue on after the inevitable showdown at Torghast's raid.
So: who will make it out? Will Sylvanas get exterminated or imprisoned as the new Jailer, or will the Jailer bite it or get his power siphoned by Sylvanas?