Inspired by post https://www.mmo-champion.com/threads...d-the-San-layn
Seeing Sylvanas went completely bonkers but also concerned about undead race survival heroes plead the Lich King to help to get rid of her while granting eternal life to the undead with his unholy power. That leads to Sylvanas being gone and Lich King taking her place as undead faction leader but also brings allied race of undead sailormen (killed and turned undead by Arthas in notrhrend) looking like Kul Tirans but undead.
What are your thoughts?