Andrew,
I would like to unlink images for the following reason:
We are using InDesign for our organizations newsletter. The newsletter comes out periodically. I have used the same newsletter, with the same structure, to produce each newsletter ... just changing content.
Without the ability to unlink images, I am left with a growing number of links from previous issues. You observed that:
".unlinking an image would mean physically moving the links out of the location that indesign thinks they reside in... "
I have physically removed the old links but they still appear in the Links List with a question mark in a small purple circle. The links are no longer used and don't exist but they are still in the Links List.
Chuck