Amon also had some good points! (The genetic basis for bending powers is the only uncool thing about Avatar‘s world-building.) I’ve always loved how each Korra villain embodies a particular ideology, and Zaheer was a really charismatic anarchist.

Absolutely, that's a huge reason why I loved LoK so much! TLA did an amazing job with a globetrotting, "let's tight the big bad" plot, but LoK is tackling bigger ideas, even if it stumbles at times