Board Thread:Naruto Discussions/@comment-3568954-20140530034624/@comment-1512913-20140606135405

What you basically say is that there's only 2 Doujutsu Sharingan and Byakugan Seel and that Rinnegan is a stage of Sharingan. I disagree. It's in reverse actually, there were just Byakugan and Rinnegan and Sharingan is what was split from the Rinnegan.

Also I don't think there is anything to be completed in Sasuke's eye. Even though it has just 6 tomoe, don't forget that his other eye has 3, that makes 9 together :)