Sounds like a poor change.Aang learns he's the avatar the night of the comet, so his friends don't really shun him for it. He doesn't run away because he's being separated from Gyatso, he just goes for a flight to clear his head a bit and gets caught in a storm while his people are slaughtered.
Has Chud just morphed into "people I disagree with" now?Took you this long to realize that?