What I'd really like, it's a way of creating Appearance profiles. For example, when the system switches to Dark mode, I would like a setting which makes me choose to automatically switch the icons style to Dark as well, or to Tinted.
This is possible on the iPhone, although in that case I can achieve that with the Focus setting: it doesn't just filter Notifications, but allows to link together Light/Dark mode, Icons style, Wallpaper.
I like when my phone switches to my Sleep mode, the icons are tinted (i.e. monochrome), the wallpaper changes to the Moon, the system is of course in Dark mode and the notifications are limited. Mac Os can also be turned to a Focus mode in sync with the iPhone, but the Icons theme must be changed manually, for example.
And there's still the issue that some wallpapers have Light and Dark versions, but you can't decide of having a wallpaper for Light mode and another for Dark.