Problem:
At the moment, changing the image order on a product isn't the easiest to do.
There's no way to swap the order of the images using drag and drop, or setting a numerical preference.
Each image you want to change has to be removed, then re-uploaded to the spot you want it in.
And if you have multiple images to upload or change on a single product, you can only do this one image at a time. The file browse dialogue doesn't allow for the selection of multiple image files to upload at once.
Together - this can be time consuming, and especially painful if you have a product with multiple images.
Suggested resolution:
Improve the interface of /_cpanel/products/view > Images, to allow an image to be dragged from one position to another, to re-order how they are displayed.