AR's optics limitation is not cameras, it's the display. That's a tough optics challenge because you have to block incoming light (very hard) and display the data very close to the eye (hard) in a form factor that is appealing (very hard).
I don't think that's so difficult--once you can play games outside using headsets I think they will grow on people. Right now, as a fashion statement they represent people who sit at home and don't go outside. Not that there's anything significantly wrong with that, except it doesn't represent the majority.
Once we have good AR applications which work outdoors, the whole game will change.
Add SLAM, CPU/GPU, Wireless radios... and do that all day on just a <5Wh battery (limited by a form factor anything close to a regular pair of glasses).
If you’re aware of any applications of LCD to accomplish optical subtraction in AR, I’d love to read up on them.