...does that mean mortal life would be not be capable of dying and passing on? No more death and dying?
Going by Blizzard's official description of the expansion, on how Sylvanas and the Jailer threaten to "unravel reality" and "unmake the cosmos" it would seem that this points to the fundamental process of living and dying. Or at least how I see it.
So what could happen? The Jailer wins and these reality unraveling events happen: no more afterlife? No more death in our physical universe?