What a huge letdown.
When these characters were half-ass introduced in the mini-season, fans were upset. Mainly, I think, because the introduction was botched. It isn't as if we as fans are completely unwilling to allow any new characters. In fact many of the fan's favorite characters were added after season one. Benry Gale and Eko to name two. The intros of those characters, as well as many others, were handled extremely well; this was not the case with Nikki and Paulo.
But like it or not, the characters were here, and we were promised by the powers that be that we would come to like them once we knew their story.
It turns out, their story was just a ploy to have a joke ending. Not a damn thing important occurred in that episode. Except perhaps for the fact that Sun's anger against the Others caused Charlie to come clean about his role in Sawyer's earlier power play. This could come into play in my theory about the island killing you in order to release you after your slate is clean. One more thing Charlie has atoned for, his death could actually be immanent. Other then that though, (which easily could have been accomplished elsewhere) this was a throwaway episode.
Until Next Time, I did at least like seeing Lando Calrissian.