First off, no reason for Honda to change the '23 at all. All the '22s are sold out as far as I can tell (I ordered mine in November and don't have one yet). So, they can sell all they can build, why spend more money adding features? Plus Honda is not known for being "first" with their motorcycles (other than DCT & Airbag I suppose).
Having said that, the '18 model / Gen 6 is due for a refresh and it will be 5 years when the '23 comes out. But there is a lot that could be done. New display (with touch screen - like the Africa Twin), a decent GPS system that gets at least annual map updates, the upgraded MCU that the Africa Twin uses allowing for more ride modes and more options with ride modes, better sag setting (automatic set the suspension based upon the weight on the bike), better rebound adjustment, WiFi to allow for auto updating of vehicle software and GPS maps, fix the horn button, improve the radio reception, allow Carplay to work when your phone is plugged in WITHOUT requiring a BlueTooth helmet (use speakers), Cooled seats (if Corbin can do it, Honda can do it), increase power & torque, more colours, better tire pressure control system. And after some of that, perhaps thangs that require more changes to the vehicle itself - Adaptive Cruise Control, Blind Spot Information, 360 degree cameras, Lane departure warning and other accident avoidance software / hardware - stuff that is already available on cars.
My experience with Adaptive Cruise Control (ACC) is quite positive with my 10 year old Volvo. I use it all the time. Through play ground zones and even in rush hour in 50 kph zones. And while I REALLY like it, I would like the option to just use regular cruise sometimes. Currently if the radar gets blocked I totally loose cruise control.