Ditto, I support Sokkla. I'm not really a Tokka, Sukka, Ty Lokka nor a Yukka shipper, hence this is why I'm planning to write a subplot involving Azula and Sokka in my Book 4, taking place a year after Book 3. You can find the journal: [link].
And I can tell you that Hahn (whose fate was never revealed in Book 1 finale, with some fans think he's dead) and Zhao (who was presumed dead in Book 1) are still alive because I think that Zhao survived the ordeal and captured Hahn, which will be part of my Book 4.
"Redemption" is the working title of Book 4, I'm actually considering to change the title to possibly "Aftermath".