Okay but ever since I learned that it's a popular fanon trope that Katara restarts Zuko's heart with bloodbending after the Last Agni Kai I can't stop thinking about it cause it would have been so perfect.
Like first of all, in the actual canon it's pretty vague how she manages to heal him and from what exactly (obviously getting struck by lightning but what specific injury was killing him?).
And then secondly, it would be such a perfectly executed, full-circle moment where this form of bending Katara was forced to learn against her will and that she is scared and ashamed of suddenly becomes something she'll be forever grateful for knowing, maybe even feeling some weird form of thankfulness to Hama for having forced her to learn, because without it she would've lost Zuko. It would be a curse that she turned into a gift, a weapon turned into a tool of healing.
It would parallel how Zuko (and Aang) formed a new, more positive relationship with firebending. Both of them saw fire as destruction and hatred, but learned that it is also a source of life and warmth. In the same way, Katara would learn that bloodbending is not just a means to reach into someones body and take control of them, to take away their agency and autonomy, it is also the gift that allowed her to save the life of her best friend after he sacrificed himself for her.
But noooooooooo bloodbending is inherently evil nevermind the pre-established theme of non-duality and separation being an illusion and that no form of bending is inherently good/bad or superior/inferior to any other. Bloodbending eviiiiiil always and there are no good uses for it because we here at Bryke incorporated have the imagination of a jellyfish.
