This would come in handy if section ID names are used and need to be named with a different ID based on the instance. Especially if one links to these sections.
Are you talking about a Section that has been converted into a Symbol? Applying ID's to elements are specific to those elements and should not carry over to over elements, even if they have the same CSS class. However, should the element be made into a Symbol then the ID's will carry over. Are you asking to have the ID for the Symbolized section element be override capable just like text or images within a Symbol?
Also, it would be nice to have the ability to override the images in a lightbox link element.
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