My jaundiced response:
Aerial Screensavers: These look amazing but are weirdly biased towards the US, China/Hong Kong, and Iceland/Greenland (? did somebody go on vacation there or something?). Evidently, mainland Europe doesn't exist in Apple's geography.
Interactive Desktop Widgets: Honestly, if this was 2000 this would be awesome (Dashboard, anybody?). But I just don't drop down to the bare desktop nowadays. I always have windows open, typically full screen, on both my home and work Macs. My Mac wakes from sleep with the windows open. If reboot, it reopens the same windows from the last session. There's no point at which the Mac shows me the desktop unless I choose to view it.
Videoconferencing: Again, awesome, but most people use Zoom (home) or Teams (work). The idea of using FaceTime for any business work would be laughed out of my office's boardroom. It's kinda sad that Apple's building such a great tool that most people won't use (until maybe the headset gains traction, I guess...). It feels very similar to things like Freeform and the office apps like Pages. Great apps, great features, continual innovation. But hardly anybody uses them because it immediately makes them incompatible with the rest of the world.