Hey there,
originating from my thread Headings chooser possible as a plugin? I finally made it and came up with my first plugin:
Basically you can have a picker (by default opened with Ctrl+r) for headings of the active page, similar to how Sublime Text can list markdown headings this way.
Maybe this plugin is useful for others as well. If you have improvement ideas, feel free to share the ideas here. Just keep in mind that this is my first plugin and I basically have no experience really so far! 