I don't want to make a thread so I'll ask it here:
Do we have enough of a sample size to conclude Future Sight = CoO + CoC?
Oda has not confirmed this, and I am not expressing a preference for it to be true, but I that is what it appears to me, considering Rayleigh alluded to it being an ability only some of the strongest in the world possess.
FS is the rarest Haki ability so far, and all users of it so far possess CoC.
I think CoC will be confirmed as a necessary component.