I'm curious to when they decided on Korrasami. The popularity for that ship skyrocketed in book 3 and I think looking back, book 3 had a lot of platonic interactions between Korra and Asami (that could easily be misconstrued for something more) whereas they realized what their fans wanted and how they where the only good pair in the series and you can tell how much more romantic their interactions became.
Damn, imagine if they had korrasami in mind since the start. Imagine a lot of things with this show though, I was hoping for Korra and Kuvira to do one last bendless battle in the spirit world ala Naruto vs Sasuke in their last fight. No powers, no super choreographed fights, no music just 2 people beating the shit out of each other exhausted.
EDIT: We really need a fanart thread. Some of these fanarts are so fucking good. Perhaps we can fill the Community OT with it (obv no creepy ones, just the good "i wish the plot did this" ones).