The modern English speech sounds so plain and bland that it takes a huge amount away from the sensations of the setting, IMO. It makes it feel like this is recent times in the countryside, and not hundreds of years ago. The old style of English presented in the earlier language test video made a much more epic impression, and really did something to make the game feel like it takes place in another particular time.
I believe that not including older style English voice-overs, just as a player setting, is letting go of an amazing and unique opportunity to really be richly immersed in an authentic presentation of another time, unlike what any other historical media is capable to offer, or has achieved so far.