Wow, dude read a Legend of Kora novelization. That's dedication.
I feel a little bit past this in my own world building, or...this is kind of a bridge I have already crossed. Worlds are dynamic and organic and ever changing, and there are a lot of reasons why all those things occur. I do think bringing some of it into the story will add richness to it, but somethings just have to go untold. Story trumps world building. Its not my goal to get the whole world right, but to create enough of a facade of it, that it serves to keep the story alive.