Screen off time is most annoying
I wish users were able to set the time off delay. I find myself constantly shaking my wrist to get the screen on and annoyed that it is off in 6 seconds.
I wish you could set the number of seconds that the screen is ON, then instead of it going off completely, have it dim to 50% for another period of time before it shuts off. That way for example the screen will come on for 15 seconds, then dim for another 15 seconds.
I'd happily forego battery life to have this option. Besides, my battery is usually still at 40-50% at the end of the day.