I also dislike the new advanced mode for Ember. I think the direction to make conversations feel even more natural is unnecessary and counterproductive to developing trust with an AI.
An AI should be different from humans because they are not and never will be a human. The goal should be a distinct experience that is authentic to a software app that has a voice.
I would look to movies such as JARVIS in Ironman or TARS in interstellar. The voices are relatable, familiar, but distinctly artificial due to its more perfect dictation.
To quote the NNg group “ people build [mental models] or theories of how a system works based on their past experiences … Therefore, when users transition from the physical world to the digital world, they carry those interpretations with them”
Don’t over optimize, it erodes trust