A pretty simple request in our opinion.
For an inventory item that has channel specific image URLs stored in the extended properties - for instance EBAY_IMAGE_1, EBAY_IMAGE_2, etc..
Only use those images when creating a template, and not drag in the ones stored on the image tab in the inventory.
At least let there be an option to turn off automatically getting them from the image tab.
It is a serious headache when you have to open each templates images and remove the ones added from the image tab. Especially when you have over 1500 listings.