Ugh I will always love the concept of Katara using blood bending to revive Zuko after the last agni kai, mostly because it makes no sense to me that Zuko was able to bounce back so easily after being struck by lightning, but also because the way the show treats bloodbending is just odd to me. It was a defense mechanism created by a traumatized victim of some of the most devastating parts of colonization, and although I understand that Hama was supposed to symbolize the "bad parts" of waterbending and was important for Katara's growth in realizing that the world isn't entirely black and white, its still disappointing to me that the show never explored the gray areas of blood bending, especially since that episode was, as I stated above, about understanding the gray areas of the war. Katara using blood bending to revive Zuko would add so much to the last agni kai in demonstrating that she has truly realized that "good" and "evil" are relative concepts, and Zuko being saved by both a defense mechanism of a survivor of colonialism and a type of bending used to terrorize his people would have even added to his arc, as the narrative required him to save and subsequently be saved by the physical embodiment of everything his family sought to annihilate.
