I h ope they keep it as it is now. Only hearing the character talk when they see something or comment on something.
Keeping it silent makes it so we can picture our character say it in the manner that we would say it.
Th voiced 'YESSS?' and 'A WASTE OF MY TALENTS' when I clicked on my PC and moved him was a thing in Baldurs gate but imo bg3 doesent need it. It dident really add anything really even though it would show a little bit more character in our....uh character.
So I would be fine with both I guess so long as our char is silent during conversations.