Many product variations look the same, as such the same images are used.



Allowing the same images will reduce the space used, the time to upload a listing and allow for easier updates to product images



It would make sense to have a master product variation that contained the images for the all of the other variations.



This would also help in listing products to ebay / amazon etc. when uploading the same image multiple times could push you over free amount of images and cost more for the listing

Or a simpler option perhaps to deliver maybe the ability to assign the images to all products with the same Parent SKU as an option.