This I do not think require a spec change besides an implementation tip/note
Just saw DALL-E AI image generators, pretty crazy stuff.
But it also gives me some thought about the image url having an additional behavior like below.
![DALL-E dreaming of becoming an AGI]()
So essentially, this just indicates that you want to either use an AI generator, or an image search engine and grab whatever first images comes to mind to the rendering engine.
This obviously won’t work if you need fine control over images, but this may be suitable for quick throwaway images.