Board Thread:Naruto Discussions/@comment-32900772-20170904113855/@comment-30323490-20170905210135

Naruto and Sasuke started battling TTJ Madara just after they received SP powers. The seals on their hands and Six Paths: Chibaku Tensei were predestined to Madara, not Kaguya. Madara would/could've been defeated with Six Paths: Chibaku Tensei as well, and according to my previous point (from my previous reply), he could've been defeated more easily. Hagormo gave the Boys the seals because he knew that since Six Paths: Chibaku Tensei was strong enough to stop Kaguya (since he and Hamura did it) it would've been strong enough for Madara as well. Like Madara, Kaguya was immortal as well, and it was pretty clear. Even until this day she isn't actually dead, she is Incapacitated.If he wanted to, Kishimoto could've let the Black Zetsu BS on a side, and just have Madara as the last villain, and the ending would've been pretty much identical, except it would've been Madara instead of Kaguya sealed away. Kishimoto already made Hagoromo give Naruto and Sasuke the seals, without the Sage knowing that Kaguya was going to be brought "back to life". From Hagormo's character perspective, he believed that since the Six Paths: Chibaku Tensei was strong enough to stop Kaguya herself 1000 years ago, it would've been strong enough to stop Madara as well. And there was nothing for us to believe that Madara was strong enough to resit the seal. Kishimoto could've simply roll with it and have the boys seal Madara, but instead he introduced Kaguya to the battle. I find it very hard to make sense for Kishimoto's introduction of Kaguya just because "He didn't know how to kill Madara" or whatever. Because the answer for his defeat was clear, as was Kaguya's.