Notion has this feature where you can provide a description and it makes a cover art for you. This helps make covers useful as it can create one related to the work shown and give it some uniqueness without requiring a lot of creative effort that would just be for internal cover arts. The functionality should be

* A generate cover button with the content of the page for inspiration

* A prompt option instead to give the details of what you want the cover to be

While this can be done easily with the chat. I believe just having those options simplifies things.