Hi. Just a suggestion. Might be a bad one as you have obviously thought Folding Text through a lot more than me, but it strikes me that it would be easier to use if you reversed the way of creating nested paragraphs. If your major headings had more hashtags than lower level entries then there would be less hash tagging all up.
"## Sub level"
Because there will probably be more points in the lower levels there would be less typing of hashtags and also it’s kind of intuitive that the more hashtags you add the more important the level.
Anyway, would be glad to hear what I haven’t thought through.