As I predicted, Sylvanas seeks to create a utopian world where no one has to suffer, where "everything is fair". Kind of like Madara Uchiha from Naruto. However I'm smelling a potential betrayal from the Jailer, because he doesn't give a shit about those ideals. He just wants to consume everything. The Jailer will probably backstab her once she's outlived her usefulness. A fitting end for someone who has used everyone as pawns.