Board Thread:Naruto Discussions/@comment-32617252-20170909181532/@comment-35622277-20170914154946

For all we know Naruto, using his position as Hokage, has already went through and learned how to use every technique in that archive of powerful forbidden jutsu, including the Reaper Death Seal, Impure World, Hiraishin, etc etc.

That would be pretty overpowered, as we know he has innate innate understanding of how chakra works the first time he entered SPSM, allowing him to theoretically learn and use any kind of jutsu.

Giving him the arm is basically overkill. However who does not want to see him Pain that jutsu whilst smirking, and leave his enemies going

"NANI?! BAKANAAA"

And we hear their internal dialogue and analysis of Naruto's abilities. My my, what a switch.