Auto makers have been putting back up cameras on cars for some years now.  Its proven to be solid tech.
Every bike I’ve ever owned, the mirrors show me what my elbows look like.  And I don’t have a neck like an owl.
Put rear view cameras on the bike and a small display where the mirrors are, so we can know what’s behind us and if we can change lanes safely.  A head check might not catch that guy coming up on you at high speed.
This shouldn’t add more than 500 bucks to a brand new bike.