Thanks for playing and streaming (all the games).
All in all, I'm rather agree with you.
That's why I call it more tech experimentation than a game.
Also, unfortunately, I don't think the API allows to add whispers, intonations, etc.
Btw, that's why I chose a modified psychopath voice (and such a weird theme): because whatever I did the voice didn't sound natural.
Anyway, nothing will probably be better than a real human voice, with feelings, current mood, and a background. ; )