Should appeal to young consumers.
For older persons perhaps the technology could focus on alleviating the impact of aging upon vision and hearing.
Absolutely. Think about a setup that reminds you where you left your keys. That provides audible or visual clues about people or places. That reminds you of your appointments.
Think about AR hearing like Waverly Labs - with near-instant universal translation. You talk in English, I talk in Mandarin, and we can have a conversation in near-real time (a second or so delay).
Where you are working on your car (or in my case, my motorcycle) and the instructions and component locations are superimposed on my visual, and it’s telling me the next step to take.