Priestess and Ama’Shan of the Night Elves bestow a full pardon upon Kaivax for his sin of necromancy.
I present to the pardoned this “Writ of Salvation” to present unto accusers as proof of your cleansing.
I can’t say anything about the Plaguelands revamp, but Blizzard should give more exploration to the metropolis that was ruins of the Straholme, before the other revamp left us with little about what happened to that disaster.
But if you want to go back to another burned Darnasus experience it would be an answer to find out the ruins that damn tree was left behind.