Table of contents
I often take detailed reading and study notes but also write 2000+ word blog posts. The length makes it difficult to quickly get an overview over the note. I'd like to suggest a "table of contents" feature that could be switched on or off for each note. With it, you could easily see all the h1, h2 and h3 headings and jump to them with one click. Maybe take a look at how Notion and Nimbus Notes are doing this.