Using the Panel Selector doesn't change the image for everyone. Editing a module and adding yet another image does, BUT the users can then use the Panel Selector to go back to the previous panel they had. It's still there so it's not so much of a problem.
I know how this works. But you're right, it may be irritating for other users. Especially those who don't know about the panel selector. Not really a problem, though. At least not as much as dozens of duplicates.