RELATED IDEAS
Resize and optimize broadcast image
Anyone who wants to shoot a broadcast normally will append an image since without one, it looks very bland.
Unfortunately images are auto sized making them normally too big for the message and causing the broadcast window to be very large look very unbalanced (large image with 1-2 line of text for example)
Note that there is a workaround which may help in the scenario. When preparing the image, you could take a screenshot of the image with a larger amount of white space around the image itself. This would help to make the images smaller when uploading into a system broadcast.
While we realize that this includes an added step, it may help in the near term.