We kinda know what happened to Aang, Katara, Zuko, and Toph since A:TLA but we STILL don’t know what happened to Sokka, BUT, in the Republic City game on the Nickelodeon Korra website, location 3 is City Hall and on the front of the City Council desk is a painting or carving of a BOOMERANG! Sokka was always the strategist, planner, and problem solver in A:TLA, so I think he had a hand in creating the Republic City Council. We don’t have any evidence of what happened to Suki. What do y’all think?