But then that leaves a few episodes of plot development for her to become the new firelord...
which means Aang fights Azula instead which would be just as epic if not more so, but then Zuko and Katara don't have anyone to match against.
Zuko vs Azula almost had to happen I think if for that reason alone.
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~Ç~ http://img.imgcake.com/AlecTrevylan006/fdshieldpngyn.png Eff_Dee
http://img.imgcake.com/nio/9fdpngys.png