SailfishOS has ambiences, and they are wonderful. You can change the look and feel of not just the home screen, but also all of the Silica-based apps with just a click. It could be expanded to Android AppSupport too. Android has dark mode, and so does Sailfish. It would be very nice if you could switch between dark and light ambiences in SailfishOS and it would be reflected in Android apps as well.
Additionally, since version 12 Android has the Monet theme engine. Normally, Money extracts a color from the currently set wallpaper, and most Material 3-based applications respect this and recolor their highlighted elements into this color. It would be even better if the Monet colors in AppSupport would sync with the current ambience colors set in SailfishOS.
Of course, these two could be done as an option in AppSupport settings, so people who don’t want this behavior could turn it off.