the only thing im concerned with the new "talk-system" is that - like you said, its not always clear what your prota will answer. i hope they make it absolutely clear so there will be no missunderstanding and maybe highlight special actions like "killing" (or engaging combat).
but oh well ... the voiced character discussion. i think most people will really appreciate the addition of voiceacting for the prota. i actually think there are only very few people
who prefer a deaf, emotionless mute zombie over "the modern" way. and i absolutely hope it stays that way.
For most people (like me) its just way more natural if you hear your own character talking. i think it adds way more immersion to the game than just pretending he just said that.
its a game and not a book. games do what books cant, they visualize, audiovisualize (if thats the word?), and let you take control. its just way more natural.