Maybe i didn’t explain very well.
My suggestion is very simple and doable, we only need a copy button in the core Outline plugin tab
This way we could paste a nicely formatted toc into our notes. I myself wrote a script copying a table of content to the clipboard. Then i copy this wiki-links into my note. It’s a bit manually but hey, i think adding a toc is something you do at the end of the day, basically for your readers and less, for yourself
I’d like to have this one integrated in Obsidian 