I'd like it if it popped up again several generations down the line, but the loss itself was what's important:
You see, I think the loss of Sword an Boomerang was awesome. And not because he did it to save Toph.
As I've discussed in some of the post-finale gAang-lives topics, Sokka had what seemed to be two incompatible story-arcs. He wanted to prove his manhood by being a warrior, but he discovered he had other talents (invention and ideas, mainly) that made it look like he would discover he didn't need to be a warrior.
Then we got Sokka's Master which all of a sudden advanced his warrior arc. That threw me for a loop.
Now, in the finale, he loses his weapons of war. Now the story arc makes sense. He became a warrior for when it was needed. Now that the war is over, he loses his weapons and is free to grow in the ways most natural for him. In my mind, Sokka's days of fighting are over, forever.
Notice how the final scene has him drawing?