I wish they would have updated the Siri watch face and decided that after a year of Smart Stack being redundant and not helpful, they would axe it. Nope. They axed the Siri watch face and kept the less-than-useless Smart Stack, but gave it live actions that essentially are not useful.
Take 'Home' for example. Only one Smart Stack option. Once any lights in your house are on, the only live-action available is to "Turn Off All Lights". You can't long press it to kick off the home app, nope. You just kill every smart light in the place, which is most of my home's ambient, night-time illumination.
And when the Live Action takes place on the Smart Stack it variably pauses my active timers and switches from the watch face that I was just looking at previously, to the Smart Stack screen, which I never invoke. It's not only less than useful, it actively has functional issues.