VO is pretty divisive, some people really like it others it completely ruins the experience because the voices aren't what they think they should be. We do not have plans of adding voiceover for DD
I'm curious, If you were to voice every scene in your game including the update 0.7 how much would that cost combining all the voice actors and such? ( assuming you are being fairly cost effective but still quality )
PS: I love the dev logs it soothes me when I can visually see that you are both making progress and interacting with the community. More devs should be this transparent with their games!