Pandoc is awesome. My fav usage is configuring git to use it to normalize binary docs to markdown (like a .docx) so they can be diffed. Works amazing for redlining contacts.
I do this too. If you use e.g. GitHub you can build this into your PR checks so that any PRs containing docx file changes get a CI bot comment with the diff from the docx.
Wow. Thanks. This is an awesome idea. Will blatantly steal. Thanks for sharing.