@WaynePonePone
the part about the relationships between aang and toph’s children is something much more personal.
The world of Legends of Korra isn’t perfect, but it’s not a horrible dystopian world, it’s something I like about The Legend of Korra with the exception of book two the problems are very real world.
but in general it is much better than living in a world in which the 3 main races inhabiting the earth separated and had their population reduced to 3 cities with some signs of war in the foundation of one of them, another there were generations of political manipulation and another is a broken community in which most members suffer from chronic depression/madness/dumbing down,
other races have apparently abandoned the land and/or been victims of extermination, the main resource has disappeared for hundreds of years and only now is society managing to recover little by little but having to deal with said resource that they no longer understand, the that causes a lot of problems and that if they get into any kind of conflict a giant black hole will emerge that will devour everything around it.