Board Thread:The Official Announcement Board/@comment-1875854-20160624151406/@comment-4869113-20160625224248

Black Zetsu's plan was to revive Kaguya; he was far too complacent of a character to believe his mother would fail otherwise, because he is nothing but her will, and what ultimately brought down Kaguya was her hubris. So, for you to change his central focus to cloning himself rather than reviving Kaguya was be an issue in my opinion too (Not saying that is your intention, but if it is..). I think my possible solution is just having an event happen that weakens the shinobi union; perhaps a fifth shinobi world? Perhaps something that breaks down the shinobi union. Cause, from what I get, Black Zetsu just started claiming countries and the shinobi union gave no fucks until the end.