I think we could take this even a step further and implement a related issues map. Hence a quick glance on this map can give you an idea how many issues are related, incorporated, duplicated - kind of like a MindMap yet we could call it JIM (Jira Issues Map). (source)

I'd probably recommend creating an issue tab which displays the link-graph for all the issues connected to the one currently being viewed. You'll have to be smart about the UI, as that is potentially a lot of information to pack on the page. I'd recommend making it filterable by type of link so the graph doesn't get too huge.