Applied EZProxy

I am curious to know if any of the NCCPL libraries have implemented EZProxy in an interesting way. We use it  to log into our databases at this point.  We are very happy that the process of adding users to the user list is nearly all automated. The features I am curious about are setting up groups of users for specific access and providing authenticated access to documents that don't reside in a resource/database.  Just feels like, even as simple as EZProxy is, there might be more that we can do with it.