Ok so if I understand well currently hugo erases all of the metadata of the images it processes (which is probably the safest thing to do)
So in order to add metadata again, I would have to devise a post-build script that would process the images.
Does it sound like a feature that could one day land in hugo among the image processing features or do you consider that the “erase all” strategy is the simplest / safest for everybody in the long term ?