Ok I finished everything last night. I watched like the last 6 episodes.
Spoilers btw
Things I liked:
Toph and her consistency, more of a cameo which made more sense. (some times you just need to leave it to the kids....)
VARICK. Seriously best character of avatar universe period. And his romance with julie was the absolute best.
The villian, Kuvira. She was a pretty scary person not gonna lie.
Bolin and his character build he was great comic relief. I always felt like he was bench-pressing when he would earth bend, i thought it was funny too lol
The idea of a super weapon, and how it was actually really devastating.
The way Kuviras right-hand man got off completely free from our protagonists after Kuvira betrayed him.
The political situations, where the leaders of the world were debating and stuff. I do like the political anime situations though
The recap episode. It was funny lol and it gave a breather. For the first part when Makos story was playing out I though it was going to be a 30 minute recap of Makos love life! LOL
Pema. Pema is a very cute character lol
Things I didn't like:
The animation of the mech suit. UCK. Should had scrapped the whole idea and brought something in like a completely decked out war ship.
Kuvira metalbending the mechsuits cannon after its destruction. Didn't they say earlier that it was really fragile and if any small parts went wrong then it wouldn't work? That cannon had been through ALOT and yet it was still ready to fire a shot 10 times longer than any of the other ones it fired?
The fact that people kept warping all around the world. It felt like the writers kept picking out 5 or 6 people from the giant group and then, "lets go on a top secret mission to save our friends"
The lack of death. Normally this would be okay for me in the avatar universe, but that spirit vine superweapon was fired at our heroes like 30 times, every time just skimming them. Dumb.
Speaking of deaths, I didn't understand why asamis father could not eject with her. Was him sitting in the seat allowing the drill to continue? He's a smart guy yet that was his best strategy?
The whole ending. The cast was just too big to give a proper goodbye without an entire episode dedicated to it, but it came way to fast. Woah look, Korra just saved the bad guy using avatar powers. Woah look a portal. Woah they are at a wedding. Woah look Korra and Asami are holding hands going into the spirit world. (Btw when they touched hands it made a ding noise- i laughed)