Yes, and this is the main problem with my suggestion. No company wants to add a feature to their game that could be percieved as 'bad' and not up to par with the rest of the product. And there's no good way to explain it to all the players why it's there.
One possible solution to this would be to make it an option that you have to switch on manually from the settings panel or if that's not enough - make it into a small patch addon that you have on your website, and anyone who wants the feature can just download it for himself.
All in all it is kind of a big risk on their part and it's understandable if they don't want to do it. And I'm sure there will be more/ better voice acting in the second game. But it is worth considering that all the people who put down the game, because - "there was too much reading for me", if you can bring back 10-20% of those people with this optional thing, then I call that a win.