It would be really helpful to be able to rename images in the media library and add Alt text BEFORE they are loaded on the site. At this point you can only add alt text to images loaded on the site and cannot do this at all for images in the shop section.
To be able to add new names and alt text in the media library stage would be VERY helpful.
It is a basic addition in most builders, but does not seem to be available on Strikingly.