Board Thread:Naruto Discussions/@comment-4682609-20140507083715/@comment-24867665-20140512215123

The Sharingan allowed Kakashi to copy a technique as it was being used. Once he performed the technique, Kakashi being Kakashi, it is probably memorized by the man, along with the thousand techniques he copied. The Sharingan shouldn't be needed to execute the techniques. The loss of the Eye just simply means he can't copy any more, or be able to see where the next action will take place before it actually takes place.

However, Kakashi probably has enough experience to make an accurate guess what that is. He is, after all, a genius.

As for his Raikiri, Kakashi created that before he had the eye. The eye gave him, at that point in time, the extra prowess needed to eliminate his blind spots. Now that he has had at least a decade of experience as a Jounin, ten of those years as ANBU, no less, in addition to teaching an Uchiha AND the Jinchuuriki Naruto, he should have the observation and speed needed to use Raikiri without the use of the Sharingan. I think Team 7 would have given all the other Jounins a run for their skills, but not dear Kakashi. =)

As for Kakashi and the loss of the Eye, I think the author did it as a symbolic thing, and it makes things more real in the story. Kakashi came into possession of that eye due to extremely saddening circumstances. He made promises to his comrades and his friends on the Eye, and as far as I can see, has fulfilled them. It is time for our poor Kakashi to relinquish some of the burdens he has carried for far too long. I'm glad Naruto was able to give him his original eye back. Kakashi no longer has to keep living up to the reputation that he has.

Regardless of what he can or can't do on the battlefield, we know he is a genius, master tactician, and raised three of the best fighters on the field. He sees a lot more than most, Sharingan or no, and it would be a wiser move keeping him where he can keep observing and sharing his observations with his comrades to keep them alive rather than being in the middle of it all the time... especially telling Naruto to keep his head or to stop doing something as that boy has a rather dense hearing problem. Wonder where he got that from...??