I love the Summarize Highlights output especially with the option to block quote, and the smart rule to strip out the CriticMarkup.
However, I do find that on occasion I’ve gone back to a PDF and added more highlights. Some kind of sync to a linked Summarize note is probably a bit much to ask, but I did wonder if there might be an easy way to add an option to “Copy linked selection” which could copy to the clipboard the same Markdown markup which Summarize Highlights generates? (i.e. with a ## header with a PDF page link, and the selected text from the PDF as a blockquote).