Custom wallpapers for stacked widgets

TL;DR I’d like to see an option to choose different background images to each stacked widget!

I know this isn’t exactly how the app was designed to be used but I think it works like this as well: I’ve been using a custom wallpaper that adds an illustration to the otherwise white background. I have text aligned to the left to leave space for the illustration on the right. With other white widgets the overall look on my phone is clear white background with text elements and one illustration on the side.

I’m using stacked widgets to organise related apps into the same view. But the illustration element is of course the same on each widget because each widget uses the same background image. It would be great to assign different illustrations to each stacked widget!