I like that in the netflix version they added scenes that weren't in the original. My favorite is the scene of Lu Ten's funeral. Iroh is just sitting there silent but you can see on his face that is he is broken inside but everyone comes up to him and congratulates him that his son died a hero. No one says it but for me it felt like in the fire nation culture you're not allowed to mourn the death of those who died in battle, which is a crazy concepts but fits with the Fire Nations fascist ideology.

I couldn't find the whole scene, but here is the last part of it (https://yewtu.be/watch?v=hwPn2gJ1B_U). For context, Zuko has gone up to Iroh and said that Lu Ten's death is great honor. But when he was about to leave he comes back and thats when the above video starts.

These scenes add so much to the character of Iroh, Zuko, Lu Ten (whose character we did know anything about in the original) and to war-time Fire Nation culture. It's amazing!