Kind of the opposite of the sharpen function, but it seems to me that it would make a natural companion to sharpening out-of-focus parts of the picture, to also soften parts that you don’t want in focus, such as distracting backgrounds.
See the Android App AfterFocus Pro for an example of what I am suggesting. What AfterFocus Pro does, I bet would be very easy and natural to add to Sharpen AI and Photo AI, and very useful. Just as your software now helps to bring the subject into better focus, it’d make as much sense, at the same time, to help put distracting backgrounds out of focus.
