Node Type and Attributes
One thing that I would like to be able to do is to create my own node types and link them together. Currently we can only link one type of node, but if we could create our own node types then we could link various type of nodes together which would carry more structured information.
For example Course -> Class -> Times
And also, being able to add a list of key value pair attributes on each node. Which can allow for semi-structured data to be stored against each node.
for example, a Question node, could have attributes named "text", "code".
These attributes would provide useful mechanism to carry information which can be interpreted by other tools or processes.