1.juubi cannot be sealed in the moon again,without removing its chakra,it cannot be sealed in a sage tool,that much power can only be sealed in a person,who has the body fit for it.if it is a known instance for for villains to die at the end of the series,if madara or tobi becomes juubi jinch,if they die,the juubi will be released.it cant be sealed into shinigami either because the other time this happened,was when kushinas chakra chain could hold the kyuubi down.but even the kyuubi and hachibi combined cant hold down the juubi for that long.it can only be sealed in someone they all trust,which is naruto.
2.when kurama mentioned that the juubi is an epitome of natural chakra,kishi was giving us a hint,because only a sage can control the power of nature(only naruto can control the power of the juubi).even madara with senju cells cant.because to avoid petrification you have to learn senjutsu in myobokuzan
3.the seal used by rikoudu on juubi was being secretly passed down to uzumaki's which tobi himself mentioned,and the only person who could seal it,and has the torii is naruto
4.the infant bijuus where told by the sennin that someone will unite the bijuus thereby showing their real power,the bijuus know its naruto and have handed their legacy and trust to him,even their names
this point have laid are dead giveaways,truly i donot know what will happen to kurama,but i know with how the story line is going and the plot,naruto will be its jinchuuriki,but i dont know why people are quick to point out that he will never be.
2.when kurama mentioned that the juubi is an epitome of natural chakra,kishi was giving us a hint,because only a sage can control the power of nature(only naruto can control the power of the juubi).even madara with senju cells cant.because to avoid petrification you have to learn senjutsu in myobokuzan
3.the seal used by rikoudu on juubi was being secretly passed down to uzumaki's which tobi himself mentioned,and the only person who could seal it,and has the torii is naruto
4.the infant bijuus where told by the sennin that someone will unite the bijuus thereby showing their real power,the bijuus know its naruto and have handed their legacy and trust to him,even their names
this point have laid are dead giveaways,truly i donot know what will happen to kurama,but i know with how the story line is going and the plot,naruto will be its jinchuuriki,but i dont know why people are quick to point out that he will never be.