It could show a red dot indicator for notifications that came in while the watch was locked, off my wrist, charging and so on. Showing notifications is a big part of its job. I shouldn't miss anything just because the watch wasn't unlocked/on my wrist.
Then, I'd like the watch to tap me if I wear it and forgot to unlock it, or if the watch locks itself while I'm wearing it (perhaps if the wrist strap is too loose.)
Would also like a swipe in from the right of the watchface to bring up a music overlay like with the workout app. Swipes from the left could still switch watchface or do something else, something more useful, becuase seriously, how often do people really switch watchfaces? Personally I only ever use one single face and I'm happy with that. I'd rather have the side swipes open for other, more useful actions.