Why would he just randomly decide to give Sasuke half of the Kyuubi's chakra? And why would Sasuke even accept it? Having that chakra is becoming an everyday thing now, I swear lol. It's not unique at all anymore.
its like dbz with super saiyan, first only goku, in the end everyone.
first naruto with kyuubi chakra, then those two brothers then entire ninja allience :D