@adeshina365
I have a couple of new sentiments regarding Naruto and Sasuke in the immediate future. I reaffirm my stance on Naruto's powers. Rikudou-esque cloak via the Bijuu's which will be Pseudo 10 tails Jin-like with the Rinnegan (I'll explain). As you yourself exclaimed, Sasuke will quite clearly be the one to take the front seat in the battle against Madara, as Obito was Naruto's parallel, Madara is Sasuke's. In this case, the Juubi will most likely become the true final villain, and the dichotomy of the savior (Rikudou) and destroyer (Juubi) would be replayed, this time by Naruto as Rikudou, with similar power (Similar body with the Pseudo 10 tails Cloak and the Rinnegan) and the Rinnegan needed to split up the Juubi thereafter (access to Yin-Yang release which is a gateway to Banbutsu Sozo).
I thought over the concept of Sasuke being similar to Kabuto and what he did with Juugo's cells, but this time on a larger scale, and the jutsu/chakra Hashirama gave to Sasuke could play a part in this whole thing. Sasuke already has his own dormant cells from Juugo via the life transfer tecnique when they battle Kirabi. This is a similar situation, but more dire. Sasuke will most likely gain MORE of Juugo's flesh and affinity for Sennin transformaion, but to control it, he would need the necessary requisites for it; in comes Hashirama's chakra. Said chakra is correlated to Senjutsu, as Hashirama's intention was to use the technique to bind Madara. Said chakra most likely will let Sasuke balance nature chakra and utilize Juugo's abilities by himself, indefinitely given the context of Juugo's clans abilities in relation to Sennin transformation. Furthermore, as I said to Robot in a previous thread of his, it's quite possible that the Elder Son had some kind of Sennin transformation, as he clearly has markings on his eyes indicative of such. This could be the key to changing the Eien No Mangekyou into the Elder Son's Dojutsu. As the Rinnegan is a balance of Yin and Yang, the ESD may be dominant Yin, with Senjutsu, which alters the eyes, transforming them, similar to how Sasuke's area around his eyes in the battle of the VOTE in Part 1 changed when he went in to Curse Mark V2.