I wonder what effect having a page solely in markdown has on SEO? Without markup for headers, links, etc, how will search engines prioritize content? Will they use the raw content or the parsed HTML?
Sure we can add JavaScript and make the web work the way we want, like this example, but many more... but what about SEO?
For example, I had a page for my app, it was very minimalistic and pretty, I targeted the 400 msec cold loading time, instead of a screenshot, I had a very well encoded h.265 screen recording (it's okay, people who can run the app, can certainly see the video), that video didn't cost more than a well optimized JPEG.
But I had to drop the video, and only load it after the JPEG loaded because of SEO reasons. Google isn't smart enough to recognize the video unless it's a YouTube video.