So, slowly all the older ninja are going to die huh? Like when Kakashi said something about the old generation surpassing the new or something. I wonder how Tsunade would die though? There's no one to replace the Hokage after that.
Well, what sucks about this is obvious, but what's good is it might mean that the rookie nine will rise to the occasion. Imagine, Naruto, Sakura, and Sasuke badass. Well, Sasuke will just be pedo-badass or whatever Orochimaru was–he was kind of lame for a sanin.
Of course, history repeating itself would suck. Sure, it means that Lee will become the strongest jounin, and Tenten will be bumped up to Anko levels of screentime–but it makes for a cliche ending. Still, hopefully something changes, even Sasuke not becoming the next Orochimaru would be nice.