I really liked the final 4 episode "movie" and the way they left open tangents for future stories.
I did find them a bit clunky at times, almost like they were desperately trying to fill time, disrupting the smooth flow of the story. The author fiat also stretched suspension of disbelief... I mean; Sokka had the luck of a Jedi master!
But overall, it was good and didn't disappoint.
BTW> did anyone else feel like the kiss at the end was a fanfic-inspired fanservice?