Board Thread:Naruto Discussions/@comment-32617252-20170909181532/@comment-35622277-20170914025248

For all we know, his current (Hashi cell) prosthetic arm gives only a marginal boost to his powers at best, and at worst, none at all.

He could literally make the switch to the prototype without any major trade off, and would probably be the better choice for him to have, although we don't know how much chakra it can store.