More that my relationship with Avatar is a nettleicious one (as it is with most shows if you know anything about me from other threads on this site) and nothing in season 4 looked that appealing to me.
What if they made an animated short that showed a little tea shop closing early because someone had rented the shop out for the night and as the owners are leaving we see Zuko sitting alone and he sets up a picture of Iroh and begins singing Leaves from the vine?