When I go back and read some, I begin to think about plot points that they could have explained earlier, but will now feel tacked on. Take Naruto himself, for instance, what about his clan? To this point, unless I have missed something, there has been no mention of the uzumaki clan or anyone important from it. Why is he the only one left? I mean, come on, does HE have an older sibling who killed the rest of clan too? I get the feeling that it will be explained at one point to Naruto, with some crap like below:
Asuma/Yamato/Jiraiya/Tsunade:"The only clan more powerful then the Uchiha clan is the Uzumaki clan, we all just forgot about it until Insert name of minor, cooler character sacrificed him/herself to save you. Now we will take the next 50 chapters explaining the origin of your family, including why nobody remembers them, and reveal that the only other surviving member is Akatsuki member or leader/Yondaime/minor character that appeared in only one chapter, while completely disregarding the fact that there is only a matter of weeks until Orochimaru takes Sasuke's body, rendering all of the training for the past 3 1/2 years useless. Now shut up and listen"
Deny it if you will, but something similar to this may just happen.
Believe it!