I'm convinced there are no MMOs, no matter how well designed, that don't end up sucking as a result of terrible userbases. Based on my general experience of Bethesda fans, I don't think that's going to change, in fact it might even get worse.
Re: Voice cast. Who cares? Bethesda always rams star voice overs in their games and utilises them in an array of terribly underwhelming ways, usually by killing their characters 10 minutes after you meet them.