I think it is a nice way to visualize the source code dependencies between your classes. If you would like to see it in action check out my blog posts here and here. You can download a VI Package (for LabVIEW 2014 and higher) from this post as well.
I just updated the viewer per jlokanis's suggestions below, improving usability and adding a new type of visualization for force directed graphs. The force directed graph is pretty cool as it is clickable, zoomable and extremely interactive. Take a look and let me know what you think