Connection measurement (strength, length, value)
If switched on, the user will be able to give each connection a value, and depending on that value, the connection line will be longer or shorter. This will enable contextual connections: for example, if the mindmap captures project dependencies, those lines will be used to show the length of time that the child of a node will take to be completed.
Iani Ionidis commented
Adding to this: Maybe be able to change the thickness of the connections instead - again based on a value.