So, the base sword could separate into 2 blades. Can the reforged Kingsmourne do the same? Inb4 plot device where the sword splits into an opposite powered force. Everyone thought Anduin would be a Disc priest, trying to balance light and shadow. What if he ends up a middle man for life/death instead? It's like that old meme of "I want a Fury warrior to dual wield shadowmourne and ashbringer, that way when I whirl wind it creates quantum singularities."
After thought ideas/edits: In Darnassian, Shalla'tor (one of the blades of Shalamayne) means Shadow Render, interesting. Also was Yrel added to player icons; Big holy/light npc potentially joining the cosmic frey? Wonder if/how Calia Menethil/Bolvar would interact with this, duality anduin and/or sword.