i kinda disliked how she instantly knew the whole element thing except for air.
That too.
I liked how Airbender focused on Aangs journey across the world and how he had to master the elements, I also liked the idea side of a side story showing Zuko's and Uncle Iroh's points of view and back stories. Nothing was rushed, there was room for character development so you got attached to the characters. We knew from the beginning Aang would have to stop the Fire Nation.
With Kora I just wasn't satisfied and I don't know how to describe it.