> Who said it’s a binary choice?

Have you not been paying attention to this administration?

Instead of closing dups, I think they should go into a pile and "a link" shows you the list. The reader can then sift through them. Literal duplicates could still be closed from there. I've run into many closed dups where the original answer, while still correct, didn't click for me where the closed question got responses that gave me the Aha! moment.

SEO the hell out of the "pile pages" so the top hits go to something useful, as opposed to a closed question with everyone commenting that it's the top Google result.

This is already the case, all linked questions are shown in the right sidebar and you can easily navigate through the graph, both up and down.