Will hearing aids ever be as effective as corrective eyewear? When? What breakthrough is needed?

Hearing aids have been around for a long time, yet there is still much dissatisfaction with their performance.  A recent post asked "Will hearing aids ever be as effective as corrective eyewear?" 
  • When do you think this will happen? 
  • What breakthrough is needed?
  • Will embedding AI in the hearing aid be the key?   
  • Will wireless remote control be important? 
  • Or do you think the dissatisfaction with hearing aids is exaggerated?