Here's a very interesting thing about humans that I have experienced firsthand. When people go through something together, no matter their age, it forms very strong bonds. I'm good friends with people within 2-3 years of my age, but there's been times in my life I've undertaken a strong challenge and met people along the way that were easily 20 years older than me, but they're just as good friends as the people who are my age. Sometimes, the bar is so high your little differences seem insignificant. I would argue like this for Sokka and Toph. Not only does Toph act older than she is, she has undergone great trial with Sokka by her side, and I feel like that could form a bond that overlooks the 4 year age gap. I agree Sukka is healthy, its just super boring.
On the Lightning Generation as a subset of airbending:
I relate lighting more to stormclouds or sky than I do fire. Realistically, fire and lightning are SUPER different. Fire is partially ionized, making it cold plasma, while lightning is electricity. I feel like airbenders could control electricity better than firebenders. Fire and lightning look alike, but their only ties are they're really hot and blow up. Plasma is wayyy different from heat. It would make more sense for storm/sky/winds people to control it that heat/burning/explosions people. Maybe Skandar and the Unicorn Theif messed me up. It's an elementally based series where lightning is an air subset.
3. Maybe the last episode is a little late. But ATLA needs to kill more people off. Jet died, and that was kinda sad, but a really good story has close characters dying.
4. There was concept art with Jinora wearing literally Ty Lee's outfit. This makes me think that they're related. I think it's super plausible that this could happen, but I don't argue about it much because there's no way to prove either way.
5. @AvatarPhoenixGrey2 , we've debated this enough at this point lol
6. Legacy of Yangchen's ending was actually pretty good. I didn't really like Shadow of Kyoshi's but the fight with Yun was insane.
7. Yeah idk I just love Dante Basco. You're totally right on this count, but I can't get that idea out of my head
8. He used it once in Warriors of Kyoshi and slammed someone against a wall almost without looking. He's got a ton of potential with them and I feel like it'd be cool to see him use them more.
9. yup yup.