A hugely valuable feature in linking nodes is the ability to see when a node is linked to from elsewhere at a glance. The currently proposed Trello suggestion of right clicking on a link to search its URL doesn’t solve the issue of being able to immediately tell that a node is linked to. I think the cross-reference feature should make the link style look slightly different than regular, one-way links do so that we can know whether it is even necessary to wast time right-clicking and searching your document for the current node’s URL.
What makes software like TheBrain truly amazing is that you can tell right away that a node is linked to as well as the relationship with the linked-to node (i.e., a parent or child relationship). In my ideal world, Dynalist would provide a symbol to the left of a node that has been linked to, and hovering over that symbol would show the breadcrumbs of the linked node so that there is no reason to waste time searching for links that aren’t there.