Kakashi (or any sharingan user) has the ability to copy any technique they witness with his sharingan if they possess the prerequisites for preforming the jutsu.
My question is: what is so special about the hidden techniques that cause Kakashi to use some but not others.
For example, Kakashi has utilized the hidden mist technique (correct me if I am wrong) but he has never used any of the Nara clan's shadow techniques.
It is arguable that he does not use them out of respect for the Nara clan. However, if you look at the fight with Pain, Kakashi was in a life-or-death situation and he could have easily utilized the shadow possession jutsu on Pain while Pain was preocupied with the shadow clone.
What are your thoughts about this?
My question is: what is so special about the hidden techniques that cause Kakashi to use some but not others.
For example, Kakashi has utilized the hidden mist technique (correct me if I am wrong) but he has never used any of the Nara clan's shadow techniques.
It is arguable that he does not use them out of respect for the Nara clan. However, if you look at the fight with Pain, Kakashi was in a life-or-death situation and he could have easily utilized the shadow possession jutsu on Pain while Pain was preocupied with the shadow clone.
What are your thoughts about this?