Okay, you guys were excited about this so here's how I would have written the Water Tribe characters as an Inupiaq
Note: this is entirely for fun and is based on my cultural experiences as well as my personal taste in media. There's no way I actually expect Nickelodean would let any of the darker content fly, nor am I trying to play script doctor or say any of this should have been canon. I have my own writings for that. I'm also not bothering to assign them Inupiaq names for the sake of simplicity and ease of communication.
Sokka
Sokka would be named after Bato's father who was killed in one of the Fire Nation raids. He would have dismissed the idea he was Bato's reincarnated dad whenever it was used to embarass him (usually courtesy of Katara calling him a grumpy old man) but go along with it when it was a positive thing like Bato calling him "little dad" or people saying he was brave like the one he was named after. He would probably use more Inupiat language than Katara, because he was less interested in works of fiction and poetry that were available from the rest of the world. He reads weather conditions, the process of learning that from his father was his first introduction to science, and respects the animals he hunts.
Katara
Named after her mother's uncle, who showed signs of waterbending skill but kept it hidden so he wouldn't be taken away. A bunch of her and Sokka's little cousins call her Grandpa and she later jokes to Aang they should have called him that because he's the one who's technically over 100 years old. More likely to explain cultural things than Sokka, who prefers to let them observe and figure it out, but knows more of the traditional stories. Even Sokka will admit she's a better storyteller than him. Eventually everyone who travels with them asks her for a story and she gives her best every time
Kanna
Still dumped Pakku for his suffocating ideas of a woman's place but also over some family drama he wouldn't let go of. Her grandchildren make a point that she has sworn to never drum, dance, or sing, and won't even be in the same room as it until the War ends
Bato, Kya, and Hakoda
Bato and Hakoda have labrets now. Hakoda is not just a prankster, but also a skilled dancer. Bato and Kya were both known for the beautul masks they made
Yue
I've already said she's the closest to perfect rep the series has, so all I'd add was scenes of her alone with Sokka's carving. She'd try to find ways to explain to him, holding the carving and talking to it as if it was him, that it wouldn't work out between them, as much as she'd want it too. Stuff like "You've had great adventures and that's exciting, but I don't want that for myself" and "You don't understand, I have a life here and I can't go galavanting off and leave it all behind" and ultimately deciding it would just hurt him more.
Arnook
We'd get to see more of his governing, specifically in the form of figuring out what to do with Fire Nation soldiers taken prisoner. When the Fire Nation says that a few foot soldiers aren't worth calling off the seige, Arnook gives them the choice to live among them and try to assimilate, or take their chances on the tundra. Terrified and abandoned in a strange, dangerous land, two of them agree to stay. The other one decides to take the banishment because he will not live under another nation's rule. Later, when Aang says they can't just leave Zuko behind, we see ravens picking at shreds of a Fire Nation soldier's uniform. This underlines the nature of Arnook's decision to give the soldiers options and shows that he hates senselessly throwing away people's lives.
Pakku
Still unwilling to teach Katara and firmly held to the belief that women shouldn't fight, but specifically as a result of his sister dying after defending against an animal that would have killed her and an unconscious friend. Some bitter part of him thinks the (male) friend should have died instead, even though said friend was Kanna's favorite cousin. Less smug and convinced he's always in the right, more sad and prone to anger, still as unpleasant to be around.
Hahn
His mother was a shaman, or something close to it, with a special connection to the spirit world, who asked the moon to breathe life into Yue. The youngest of three brothers, Hahn was the only one not to go missing on a hunt. Rather than believe they're dead like everyone else, he insists that he will find them someday. He's happened upon various animal spirits before and can painlessly finish off large game with his bare hands. Knowing the spirits are on his side as well as the attention his skills as a hunter have gotten him have made him arrogant. He has the dream of Yue sacrificing herself instead of Arnook, but he mistakes it for Yue sacrificing herself for Sokka, starting the animosity between them.
Hama
Taken from the Southern Water Tribe but after being kept prisoner, a man of minor Fire Nation nobility decides to keep her as a maid, mistreating her and eventually forcing her to marry him. They have a son, who ends up being the first person Hama bloodbends into the underground cave. She accuses the woman on a nearby property of bewitching her son and making him disappear, and the next full moon she bloodbends the unwanted husband into that cave. The people are convinced and the woman is driven away. More people disappear, regardless of class but nevertheless people around her. She plays up the grieving just enough that no one could ever suspect it's her. She's assumed to be cursed and lonely, and so when she leaves this house where her family was taken from her, people understand. When she weeps that the curse must have followed her after the first full moon she lived in that town, the people show her pity. A few suspect her, but they are shut down as being cold and heartless.
