Quote Originally Posted by The Chancellor
Wouldn't that mean that Pain is the true original blood descendant? Since he had the original rinnegan I would think he's the true family member of the sage path.
Pretty much, yeah.

I really don't see how his eyes could get further and further diluted and create new paths and powers along the family trees that are "created" from the rinnegan. And that seems to be a running theory with you Assert N. How would one eye technique branch off and create new ones when none of them even look the same. In fact the only similarity between all of them is the fact that they can see chakra and chakra colors.
That's not really a theory of mine. It's basically been stated by Madara.