I use a graphical thought mapping tool called The Brain (any other users out there?). It would be amazing to be able to have an automated navigation of the meta data in a rapid fashion! This is such an “out there” idea that I am not even going to label it a feature request!
With The Brain software you record thoughts (could be URL, snippets, documents, notes, etc) and link them together either as groups (Types), hierarchies, and relationships. Its a bit hard to explain the power of it without trying it out (much like Roon!) This animated graphic shows a tiny bit.
There was a discussion along these lines about 18 months ago. I think Roon already contains the relationships between releases, musicians, labels etc. in its database, but I agree that visualisation would be great one day.