this isn't a conflict between two clans, it's a conflict between what was a clan and the entire village. the Senju clan was probably just added in to draw more parallels between Naruto and Sasuke, yet Naruto probably isn't a Senju due to the lack of references. the conflict of this story is between the Kyuubi and the Uchiha. as you can see here, Naruto mentions the two opposing forces,
"we won't be Uchiha, jinchuurikis, or anything." it has been this way since Valley of the End and will continue to be the main driving force of the story. the history of the Uchiha clan has been reverberated since the earliest chapters in Part I, along with Sasuke's revenge. his revenge was mentioned within the same breath as Naruto's dream of becoming Hokage. where were you in Part I, where were the complaints about the Uchiha clan, "too much" Sharingan, I hate Sasuke, when did you complain about this in Part I? it doesn't matter if you do not give a damn about a certain character, whether you like it or not, that character has been there since the beginning, along with his stated goals. in fact, if I were Kishimoto, I wouldn't have given this manga the title "Naruto" since there seems to be another main character that is essential to the story. as for Naruto's familial ties and history, what is there to talk about? he is the son of Yondaime, who although isn't being mentioned much right now, had plenty of show time in Kakashi Gaiden and had a lot of speculation and hype in Konoha. Part I, at most, spent a lot of time drawing parallels between Naruto and Yondaime and now the same thing is being done in Part II, but to a greater degree to show Naruto's strength. there is essentially no difference between Part I and Part II, except that it is now confirmed that Yondaime is his father and is even used as a meter stick for Naruto's growth, both of which were not in Part I. as for Kushina, why are you questioning her relevance? Kishimoto already stated in an interview that he will reveal a bit more on her. just wait a bit, give it some time, Kushina will be revealed soon enough. the fact that she is being revealed so late in the story probably hints towards her having a very important role.
to be honest, I think this thread is a place where a bunch of members just take out their frustration over their tardism and how their favorite character is lacking according to their own standards. it is just a place to blame everything on Sasuke. people can say a lot of crap and garbage about Sasuke ruining the story or that the story is going downhill (which it is NOT), yet these recent chapters prove that Sasuke makes the story interesting. where are all the trolls, the character bashing, what happened, did they all disappear? even I find the recent chapter to be interesting and yet, none of those members who had nothing better to do in their spare time except bash characters are MIA (Missing in Action). it is simply because this manga generates a lot of tardism, obsession over characters and when something doesn't go their way or a character doesn't kneel and bow down to their favorite character (Naruto), the story is going "downhill". the story hasn't gone "down hill", as a matter of fact, it's gotten a hell of a lot more interesting than it has ever been before. the best indicator of how a manga is doing, is the amount of volumes it sells, not your opinions. the manga sales greatly increased Sasuke vs. Itachi arc. no one cares about Sai, Rookie 11, bonds, and the pathetic village known as Konoha. instead people are more interested in the Kyuubi, war, alliance, Kumogakure, the Uchiha clan, Kabuto, Edo Tensei, Akatsuki, Itachi, Madara, and what Sasuke's new doujutsu will look like! just wait a bit more until the war starts, volume sales will skyrocket close to One Piece levels, maybe even more since One Piece has basically settled down. I say this since everyone seems to rate this manga based on OP, although I do that too sometimes. this manga has a lot more potential, but it can only harness that potential by using the same points of interest I mentioned above, not boring one dimensional characters such as Sai or Rookie 11.
Spoiler: Will Sasuke fight Kabuto
showas for Naruto fighting Kabuto, I think that's a really bad joke. what is Naruto going to do, preach? is he going to smash a Genkidama Rasengan on Kabuto? Kabuto is going to have more regenerative capabilities that Orochimaru, he is going to keep on coming back and Naruto will not be able to kill him even if he tried. what is Naruto going to do against Edo Tensei? develop Shiki Fuujin so that it doesn't kill you, what? Kabuto already revealed his goal is Sasuke and we can tell judging by the horny look on his eye, he is serious. likewise, Kabuto revived Itachi and Nagato, both who have no relevance to Naruto. Naruto has already fought Nagato, he has already spent up his development time with him, Nagato here is simply a killing machine that will be put to sleep. Kishimoto basically made Kabuto a test subject for Sasuke's new power the moment he revived Itachi. what better way to demonstrate his power than to have him fight all five Akatsuki zombies? right now the zombies will cause mayhem for the alliance and will probably stay clear of Sasuke since Madara instructed Kabuto to do so. when the alliance attacks the hideout causing chaos, Kabuto will take his shot on Sasuke, who by then will annihilate him and his zombie army. this will be done to give Sasuke his final goal, Kabuto's jutsu, a purpose that involves capturing Naruto alive and reviving the Juubi. this will probably happen while Naruto is sitting comfortably, chilling with Killerbee!