> Double tap power button to quick access your camera

There’s already a button on the lock screen, a gesture from the lock screen, swipe down to control center, or use the app icon. You can also set up a backtap shortcut. That’s enough ways to access the camera. What would you do for Apple Pay if you removed it from the power button?

> Allow for alarms to be set on custom dates and times

That’s a common request.

> Have the keyboard remember commonly typed things like emails (it makes no sense that I have to retype my email every time

Set up text replacement in keyboard settings. I have mine set where @@ fills in my email address.

> Make Autofill actually autofill everything like it does on android

I’ve never used Android so don’t know what happens.