Regarding Crawl Maps, yeah it does have some limitations on, which I've written about here - https://sitebulb.com/resources/guides/crawl-maps-faqs/
Although from your comment I think you might be thinking it is a link map, rather than a crawl map. So with the Crawl Map it is mapping out how each URL/node was found when the crawler traversed the site. So each node will only ever have one edge/link.
A link map ends up a LOT more messy, although it's on our roadmap to try and build one of these too!