Hm. It might help to hear some things you’re imagining you want to do but can’t currently do (although I appreciate that imagination might be limited—sometimes we need the feature to show us what’s possible).
Far as I can describe, there aren’t really any “functions” to the graph. You just create links and it separates them. There may be some best practices in terms of how to use the graph to e.g., expand your thinking on a topic, though…