Its cute how Tenzin's daughter looks like Aang with her new hair do! The Korrasami ship has also picked up steam. Its not a yes, but theres too much there to say its a no placing it at a solid maybe. And now that Asami seems to be taking on the caretaker in their relationship something might spark between the two.
Meanwhile I looked up what mercury poisoning can do to a person. First and foremost lets talk about stuff that probably wont be an issue. Korra's Kidneys. Seeing as all the mercury got siphoned out her kidneys wont be too damaged. Her skin isnt peeling either so thats a good sign.
Now lets talk about what probably DID affect Korra the most. Primarily the muscle weakness and the mood change. With that much mercury poisoning your system it doesnt just cause muscle weakness but it affects co-ordination too. Theres a chance if she gains the ability to walk again or when she gainst the ability to walk, her Avatar-Fu will be downgraded. And that brings us to the other point, her mood change. I think this is a permanent thing. We'll be seeing a lot more of Melancholy of Korrasuzumia from now on. She will most likely be very reserved from now on, almost like a robot with the occasional outbursts of emotion, another symptom of the poisoning.
While the poison is out already, while it was inside her it was doing damage. And I think next season we're going to see a very very different Korra. Im even willing to guess that we'll have a big timeskip where they are fully fledged Adults.