(Suggestion) Custom Light/Dark Wallpapers

[This is a suggestion, not a question]

I think Apple should add this feature in iOS/iPadOS 15 that you can choose two photos as the light or dark mode wallpaper respectively. So for example, if I added a light photo of Catalina as the wallpaper, but when Dark Mode is turned on, it's just dimmed. What I want is that you can choose another wallpaper (in this case, Dark Catalina) and when Dark Mode is turned on, it switches to Dark Catalina.

(There's not a suggestion forum at Apple so I had to post it here smh)