Hearing aids - inconspicuous or fashion accessory?

I understand. I’m just trying to get the OP to look into it further in a a way that a single person could easily do. Will it be enough to prove to management to take a risk? Stranger things have happened in companies work for, though I assume the level of investment in terms of safety certifications and such are very different vs industries I’ve worked in. If the OP really believes in this as a concept I would recommend trying to do some sort of quantitative research as well as developing a manufacturing approach that uses an existing platform to minimize cost and risk. These two things might influence the organization to do some deeper digging.

While your feedback is based years of experience (a good thing), the OP is a new designer and likely needs to learn for themselves. And who knows, he or she might break some new ground. Unless there is a technical or ergonomic innovation then why make a new one at all? Market demands?