Like Tenzin said last season shaving your head is optional. I really glad they gave Jinora her hair back. She looked way too much like Aang.

Personally I quite like the fact that the Air Nation is having to adjust to its more modern setting given how it has been rebuilt using members of the regular populace, rather than being a society of monks who have been raised in such a way as to accept everything about the Air Nomad way of life.

Nah, I think there are 5 things that are hidiously more annoying.