I was just thinking on the power boosts the majority of the characters get. From Sage Mode, to Jinchuuriki Cloaks to even the 8 gates.
And it got me thinking.
What kind of beast would Naruto be if he entered his final cloak(the trench coat one, not Bijuu form.), and made two clones that then powered up with one going into Sage Mode and the other opening the 8 gates. Then, when they dispelled the effects would rush into Naruto and fuse the 8 gates with Sage Mode and Naruto's final cloak form.
End of the universe? Super Saiyan 5?