My biggest complaint is that the screen is always off when I need it. When I'm in the gym for instance or playing sports, I often want to glance at the time, notifications, activity app, ect. while my arm is down and I can't raise it or reach over and turn it on. I want them to add wrist gestures for one handed operations. Like you could shake your wrist to wake the screen. I'd also like to see the screen turn on when a notification comes in, regardless of the position. And I'd like to have an option to keep the display always on, like while I'm in the fitness app. I know it will drain the battery, but I want to be able to keep it on so I can glance at my watch while I'm exercising.