During todays Devstream the concept of having something on Neuro Sama's new model to show when she is thinking was brought up. (Not that it was going to happen just that it was an idea) and I wanted to throw out an idea for it.
I'm basing this on the game Detroit: Become Human but I'm not trying to say it should be identical or etc (I doubt the makers of D:BH would be happy if that was the case)
If you haven't played it, in Detroit: Become Human, androids have an LED on the right temple that changes color based on the condition of the Android.
The normal or "default" state of the LED is Blue, but when thinking or processing information it typically turns Yellow. And when critical, damaged or suffering intense negative emotions such as fear, anger, stress or etc it turns Red.
I mentioned this in livestream chat earlier and someone mentioned that the intent is for Neuro-Sama to look Human, and not like a Cyborg or something.
In that case, it might be an idea to incorporate some sort of "Mood Device" onto Neuro Sama's clothes/outfit, on the torso or on her arm or wrist.