I posted a feature request, but would like to elaborate on this further.
It would be great to have the ability to rename the uploaded image/media at the time of a post being published.
The desirable renaming feature would be to completely rename the file based on the post_type, the post_name and the date-time. The latter would act as a unique number and identifier.
So, if a user uploads a post featured image named 87898635276.jpg
The WSForm would change it to product_blue-shirt_1608211447.jpg