I was thinking the same thing. I love the dark, gritty voices of the dark elves, and it would suit the darker atmosphere of Skyrim very well I think, but I don't know if he could deliver high quality acting for all of the dunmer.
I want someone who can act, and it would be wonderful if that someone could do it that voice. In any case, not the Oblivion voices.
Thing is, good luck trying to find a decent selection of VAs who can pull off the incredibly raspy Dunmer voice. Bethesda should probably look into figuring out how to transfigure the voice to sound like that using postprocessing effects, rather than finding a VA with the ability to do it. Even if the VA is capable of it, it must be extremely hard to juggle both the raspiness and adding tone and inflection into the voice - not to mention significantly more lines of dialogue would have to be recorded than in Morrowind, since the dialogue is fully voiced. After hearing the Drell voices in Mass Effect 2, I'd think it should be very possible to make such an effect via postprocessing while making it sound natural.