I believe SO6p is saying that someone (Naruto) will lead the Bijuus down the right path. It's important that the Bijuus themselves seem to think that that is what he was saying.
Look at the expression on Naruto's face after Yonbi Shared his chakra, it didn't look like someone receiving a power-up, more like a happy gift.
When you take the Yonbi's belief that Naruto is the one referred to in the SO6P's prophesy, it becomes almost unavoidable to believe that Naruto will become Jinchuuriki of the Juubi, or he that will re-birth them to once again become individuals, using the spark of the chakra they gave Naruto along with their names.
It is quite possible that the Chakra inside Naruto from the Bijuus, plus their names, is even now incubating a new batch of bijuus.
In this scenario we could end up with
a) Juubi jinchuuriki vs Juubi v 2 jinchuuriki., or
b) A way to redeem the bijuus from the juubi's chakra after the juubi is defeated, if their personalities are completely erased inside the Juubi.
These are just guesses hopefully not too wild ones.