Looks interesting. I am on the hunt for clean tools for producing presentations. I really like Powerpoint, mainly because of their animation and vector editing features. However, I don't want to keep using a proprietary tool.
You could also try Hyperdeck which uses Markdown for slides as well, but supports most of the animation features of Powerpoint as well as MathML and stuff like that (no vector editing though)
If you're the coder/hacker type you might like Typst. It's a typesetting tool but it can create presentations too and I like it better than Powerpoint where I have to manually edit and align everything on every page to ensure a consistent style.
