Thus a CEV would likely assign some value to the preferences of a possible human successor species by proxy through our values.
An interesting question, is the CEV dynamic? As we spent decades or millennia in the walled gardens built for us by the FAI would the FAI be allowed to drift its own values through some dynamic process of checking with the humans within its walls to see how its values might be drifting? I had been under the impression that it would not, but that might have been my own mistake.
No. CEV is the coherent extrapolation of what we-now value.
Edit: Dynamic value systems likely aren't feasible for recursively self-improving AIs, since an agent with a dynamic goal system has incentive to modify into an agent with a static goal system, as that is what would best fulfill its current goals.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.