I have mixed feelings about it, especially because the original creators don't support at all because they kinda took it and tweaked it(as a writer, that would make me mad too) but it's still a million times better than the 2010 movie.
It was the mechanist and his son were in Omashu and not the Northern Air Temple, why didn't they even stop at the Northern Air Temple. And to top it off, Jet and the freedom fighters were in Omashu? So they did like three episodes(that are really far apart) all in one. It's inevitably impossible to top the original cartoon.