Well, I can't argue with that. When I said I really like voice acted MCs, that is only true when the voice matches. When I can't find a good voice match it does tick me off. So they should give you the option to not have a MC voice.
My evil character would be better off without a voice at all than any of the voices provided, so I must agree with you there.
I also have the same issue with Solasta. A party of even 3 females has 2 females sharing a voice OR 1 has to sound like a guy. That is not fun, and it is very limiting.