You know only the smart people can be final villain. Kaguya seems power hungry which is not smart, but on the other hand, Hagoromo is extremely smart. I believe he is the final villain.
yeah ive been thinking this as well idk random thought that's been on my mind but I think naruto will meet other uzumaki's one that is his cousin that looks just like him with red hair that is op and the well have a friendly spare and he will meet his uncle don't judge me lol
Yup, he comes back & takes Madara's middle eye and Sasuke's eye & kills the entire NV. Okay, okay just Madara....and Sasuke & Naruto to prevent future problems.