Thread:Mygeto/@comment-1615275-20140910093832/@comment-1527105-20140911022001

He helped Korra decide whether or not she should have turned herself into Zaheer in exchange for the airbenders. So, there's that.

Plus, it's spectulated he'll have a larger role in book 4, along with the Fire Nation. Book 1 focused on Airbending/United Republic, book 2 on The Water Tribes and book 3 on the dystopian Earth Kingdom. It's only fair for the Fire Nation to get their time to shine.