Control how the glass widget looks in Dark Mode

The glass widget background follows the system appearance, and you want different things from it:

• Some of you want it to darken a bit in Dark Mode, like other apps' glass widgets.
• Others want the opposite: keep the system dark but the glass clear, so the wallpaper shows through.

Idea: a Glass Appearance setting (Automatic / Clear / Dark), or a clear-to-dark slider. We're looking into what iOS allows here.