I haven't had too much time to work on the visulization, but I have added a notable feature. Now when the visualization loads up it requests a list of all the pages on the wiki. This allows the user to have a better idea on how many pages there are and how few linkages exist.
I think another major feature I need to add is a way to keep track of categories for every page. That will allow it to look a bit more linked as some wikis rely on the category system as part of its navigation scheme.
I have uploaded another video with this all page list feature.