Could it be that Jeffs voice simply cannot handle the oceans of dialog needed when every single line need voice acting?
If Jeff couldn't handle that much, then they could make his voice for only some Dark Elf characters. I mean, a race does no longer have only 1 voice actor anymore.
@FreakLore444: Yes, I know. I just wanna know why. Imo he's the best voice actor there is for Dark Elves and fits them perfectly. It would be nice to know why they keep take him out since Oblivion.