I just had a crazy idea in my brain.
I am just starting a new project in which I'll be rewriting a document. I've done this before and the first step is always the same, I disect the document by chapter, section, and break it down as far as I can go, making each title a thought with the body in the notes. Then I link references and start building. When I am done, I'll rip all the notes back out to reform the new document.
It occured to me that it would be a neat feature if I could import/export a document into thoughts this way. Perhaps retaining the base document and doing my editing inside my brain.