For me the Apple Watch is missing 3 key features:

- All-day 5G Battery

- Better Siri

- Watch app for iPad and Mac

If they offered at least the battery and Watch app expansion they could sell the Watch itself as a solo communication paradigm that removes the need for a phone and all its addictive negatives.

A better Siri would enable the watch to do more by itself. (if anything we'd all love a better Siri!) They could add in a fingerprint sensor to the side button for biometric payment and login authentication.

In future they might even be able to offer an under-display camera for Facetime calls or a pop-out one hidden under the crown that can rotate 360 degrees so you can take pictures with it too.