To be honest, I don't actually think the lineage of Naruto is important or ever will be. At this point, it won't affect the story, since the last few arcs have Naruto in them, but he is ignored and gets little or no character development. Especially because this last arc is one of the longest and is all about Sasuke. The fact that he contains Kyuubi is more important, he has no bloodline limits either.