In a thread on text formatting, I found #djot casually mentioned (then ignored) as a recommended #Markdown/#Commonmark alternative.
I think I'm sold.
IMO it's better designed (single * for bold), removes ambiguity (# headers only), while being mostly compatible with Markdown/Commonmark.
https://github.com/jgm/djot
@dpwiz Yeah, I certainly use `~~del~~` more than subscript, but I must admit `{-del-}{+add+}` is far more readable. Better than DIFF too. Having a standardized way to do subscript and superscript is nice to have too.