Markdown is great to write a talk (especially a talk about code) and not get distracted by pimping your slides. But once it comes time to make your slides look really great, I wish there was a proper UI for it (with fancy anination etc).
Pandoc apparently supports exporting to PowerPoint, maybe that could be a sufficient intermediate step from which you can import into keynote?
Alternatively it supports a few HTML-based slides support (as well as beamer), that’s no UI but it should offer good opportunities for styling / customising.
Markdown is great to write a talk (especially a talk about code) and not get distracted by pimping your slides. But once it comes time to make your slides look really great, I wish there was a proper UI for it (with fancy anination etc).