In our organization, we have found multiple use cases where users would like to submit a form and a data point we would want to capture from the form user would be a free style image either on a blank canvas OR the ability to upload an image and have the user "mark up" the image to answer a question or provide info.
Examples:
To add, ideally the marked up image or the drawn image could then be saved as an image and allow us to map that in a PDF doc gen. This would be a very invaluable feature for us based on our business.