1. The battery seems replaceable. I had an original Google Glass... after 2-3 hours of use you had to take it off your head and let it charge, meaning that you would never get used to always having it on. If people have to choose between having a useless hunk of heavy metal on their head, or not being able to use it while it recharges for a few hours, you have failed. 2. Making it AR-first and having that weird external display. Real life will intrude. Can you answer the door, turn off an appliance, do anything else, without having to pull something off of your head and unstrap some controllers from your hands? With the Apple model of handling things, you can pop out to real life without having to get in or out of using it. If you have to take it off, you're just a little bit less likely to put it back on. 3. Tapping your own fingers to click. This was something I brought up to FB/Meta when I was working there, but they decided not to use it. The only way you can give a tactile/haptic response to virtual items, is if there's also some sort of physical item. Tapping your own finger is the single easiest thing that makes sense. I hope that Apple adds future support for augmented 'props'. Imagine an empty artists palette (typically white plastic), that has virtual colors in swatches, or in a color wheel. You can tap on the physical palette to choose your color, to virtually mix the paints, etc.