The digital crown looks like one such mistake. Swipe-to-scroll is so natural, particularly at this point, that moving back to an indirect method of scrolling seems just wrong. And doing so on a device that's already touch, and already using swipe-to-scroll, feels twice and wrong and unnecessarily confusing.
I understand the intent and the goal, but the inconsistent use of the crown -- if it's so great, why can I still swipe to scroll at all? -- is a tell. It would have been better to simply detect swipe-to-scroll along the right edge of the bezel (if not along the right side of the frame itself) to effect "scrolling without obscuring".
Four-ways-to-click (crown-click vs tap vs force tap vs tap-and-hold) is an eyebrow-raise-er all its own.
Also: displays should be wider. At fifty- to one-hundred-percent wider the display would be far better for notifications and would make the selection of A/B buttons more clear and precise.
The next time you get a notification on your phone, rest your phone on your wrist, so the notification is displayed roughly where a smartwatch would sit. Ask yourself whether that notification would still "work", if it were crammed into an Apple Watch-sized screen. Some certainly do. More can be made to work alright, if font size were reduced. IME, most simply don't work.
There just isn't enough room to get enough meaningful information onto a screen that size, in a comfortable font size, for me to make good decisions about what can be ignored and what should be addressed.
You can mitigate this problem if you can ignore all messages of a given type (e.g. don't even bother getting email alerts on your wrist). But even if you could do this, it would be better if you didn't have to. A screen that enables better decisions would make for a more useful object.