Yes, at least they tried matching existing voice samples to the new BI units, but it still feels a bit cheap.

And, no. I actually think that very very few people play PC games, because it's just such a visual thing to enjoy and requires mostly hand-eye-coordination which is a bit difficult if you've got the hands of a concert pianist but no working eyes.
In this case, however, my blind friend and I started playing shooters together, back in the days when the surroundings were easy to describe for me and a lot more simple corridors and stuff were used. We share the controls, he has the keyboard and does movement and firing, while I'm responsible for aiming, telling him what I'm seeing right now and that it might be a decent idea to hit the fire button repeatedly because some zombie is forgetting his table manners.
In RTW, he cannot do as much as in a shooter, but during battles he's in charge of the keyboard commands, such as "halt" or "fire at will", but although it does not give him control, he absolutely enjoys the brilliant sound engineering done by CA. He can't tell if a battle is being lost or won, but I can describe what is happening to him (thank the gods for the pause button).