Hagoromo said that all they need is Saskue's Rinengan and Naruto's Bijuu chakra or simply the Bijuu's themselves not those seals they are gone also in this chap it was mentioned that they need to do the Rat seal .
Hagoromo also alluded to the fact that they retained their abilities when admitting that Naruto had not been corrupted by the power he was given, unlike Kaguya.
But Madara was the Jinchuriki of the Juubi and had Hashirama DNA on his chest I guess its bc of that that he could regenerate and he used Zetsu for it but Sasuke doesn't have any of that also it was plot shield and a freaking asspull so there is that lol .
Chakra is chakra. I was referencing the aftermath of Guy's 8th gate rampage. Madara used the power of the Jubi to regenerate from what would have been fatal injuries.
If he can manipulate the shape of these individualised beasts into a single humanoid being then creating a basic chakra shroud like the one Naruto had when he resealed a gap in his chest with should be a simple task. A cloak made from the chakras of all the beasts should be much more potent compared to the strength of just 50% of Kurama.
The Gold Saints
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Of course, he doesn't care. Who needs Sakura. He has Sasuke!
