I think voice with a screen is interesting, but voice alone can be difficult. What is the last voice controlled IVR (phone system) that was awesome to interact with. I think it takes a combination of voice and something can can be confirmed with another "button", or something you can touch or push to confirm or cancel what you've "asked" it to do.
I think it can augment things well, but not be the prime time star.
I think it can augment things well, but not be the prime time star.