If this is implemented properly it’ll be a game changer for collaboration on papers. Means one can write a paper with colleagues in markdown and then easily knit with pandoc/quarto. Cheaper than overleaf etc.
I have this in my shell history:
pandoc --from=docx --to=asciidoc --wrap=none --atx-headers --extract-media=img doc.docx > doc.adocWriting in markdown and converting to .tex is actually a quite popular way of doing that these days.
It's the suggested edits combined with comments sidebar right there in the document, where you can have whole back-and-forth asynchronous discussions.
There's no obvious/easy way to have comment threads in markdown or in git.
And while you could, in theory, implement suggested edits as commits on a separate branch waiting to be merged in, the workflow for that would be pretty horrible -- are you going to create a separate branch and commit for every single edit? Since small edits are generally individually accepted, rejected, or further modified.