y'all ever heard of djot? It's another markdown alternative, "a lightweight markup language" that's designed to be easier to parse (by computers). It's pretty nifty and I like the look of it. Makes me want to write a clojure parser for it.
The inline attributes are specifically very cool. Feels like inline css but for markdown instead of hiding html within your markdown.
Given:
An attribute on _emphasized text_{#foo
.bar .baz key="my value"}
Generates:
<p>An attribute on <em class="bar baz" id="foo" key="my value">emphasized text</em></p>
