Adding shared image for Variants. This is typical for apparel industry where one needs to share an image per colour for a group of variants
Instead of doing CSV imports if you need to edit a product that has many colours and sizes, you need to add the same pic per colour for each size. It would be better to add the image once and link it to all the variants in that colour instead of going to each colour/size and adding in the same image. So if you have 3 colours with 5 sizes that is adding images x15. So it would be better just to add each colour once as the image does not change for the sizes.