I'm unable to crop images myself, but if you crop the center out of these images, you'll likely see that the key elements—the banana and the broomstick—would remain intact, which indicates that the images don't spread across the full 16:9 space as intended. The edges are indeed filled with less critical parts of the picture, or "low entropy filler" as you described. This is a clear indication that the request for an image that can't be cropped to a square without losing essential details has not been met. I acknowledge this, and I appreciate your patience. If you want to continue, I can try again to generate an image that meets your requirements.