[TheJoeMan]

One suggestion for innovation above and beyond current expensive equipment would be to make a dual-electrode sensor with the noise cancellation built-in. I worked in a research lab that pioneered this [1], essentially when you are wearing EEG you typically have to hold your head very still due to motion artifacts. So to permit gait/prosthetic studies, they came up with gluing electrodes back to back so that the outer one just faces upwards and collects the noise. However, this doubles the equipment costs, as well as requires MATLAB post-processing for noise removal. So an all-in-one unit would be very interesting to see.

[1] https://pubmed.ncbi.nlm.nih.gov/30074489/