Definitely @malecjan! The idea of a more useful and clearer outliner seems to be realised in the https://gingkowriter.com/ . The recipy?
Taking the outline and separate the different levels horizontally. It allows you to work on granular level, but keeps you in the big picture at the same time, to navigate and restructure the document. Very ADHD-friendly! @tallguyjenks puts it here nicely: https://youtu.be/dxCJHHWyNzY
What do you think @WhiteNoise ?
examples in Ginko:
Related to plugin/FR ideas in these posts:
https://forum.obsidian.md/t/outline-core-plugin-improvement/9540?u=sofortlos