in chapter 453 madara says he needed negatos gedo rinn tensei jutsu i may have worked out why. i think his original intention was to compleate the ten tails and control it like he did with the nine tails makeing him powerful again. what he is doing the now i think what he is doing now is his effective back up plan to become a jinkuriki to gain acess to his chakra to control the shinobi world. his orginal plan was to use negatos rinn tensei to bring the ten tails back to life through the collected energys in the statue. so he could control it. since naruto has put a wrench in his plans. he has to seal it into himself to become whole as he says it.
what do u guys think?