Thoughts
Surprising can't-live-without-it Apple watch feature: the colored ring around the current temperature.
(Specifically with a multicolor/white face color; it uses your face color if you set one), the temperature widget has a ring around it which is a gradient of colors representing the low temperature to the high temperature for the day. And since it's using the same colors, I've learned, "oh the weather is light teal—it's cold but not freezing." That color to temperature step is so much more enjoyable than a number to temperature.
I'm talking about the widget in the upper left here