For us, Asciidoc(tor) is the answer. As easy to learn and use as Markdown, more powerful than RST. Best combined with Antora, Asciidoc's answer to Sphinx.
One thing that turned me off of Asciidoc was the dated smart quotes syntax. I actually wrote my own Markdown preprocessor for LATeX that takes care of smart quotes, links, bold, and italic and have been using that for now.