Danzo with Hashi's cells and Sharingan eyes...
Still No Rinnengan???
The Rinnegan, most likely, is not a genetic thing. I somewhat doubt that it requires both Senju and Uchiha bloodlines (though this might be a way to make achieving it easier).
Regardless - the Rinnegan is based off of Buddhist principles. The whole concept of Buddhism is inner enlightenment, seeking the 'God' that lay within us.
It is compatible with many Taoist concepts and outlooks - which suggest that a 'Sage' becomes, essentially, one within nature.
And what happened to all that crap when it was said that Byakugan is the upgraded version of Sharingan...
Y is Byagugan out of the lime light???
You'll find these two threads interesting (both by me, of course) :
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That is how the Byakugan fits into the whole story - and how Hinata fits in with Naruto.
Hinata and Naruto share the same destiny. Just as Neji's destiny was to die protecting the Head Branch. There's a strong coupling of both those concepts within Chapter 614, as Neji dies to protect the Head Branch - entwined with the destiny of a one Uzumaki Naruto.