Ooh very cool - I've been looking for something like this.

Top feature I'd care about before using this would be the ability to read the actual 10K inline and jump to sources, perhaps as an iframe or so.

Oh you can actually do that in this! the nodes of the map if you click them have references to the actual 10Ks which are readable as html in the space. Not only can you read the original text, but the html has been 'chapterized'; you can also read summaries of chapters. Further, you can query anything in chat - where if you select the document and ask, it retrieves the right passages to answer your questions too.