When entering stuff into the mind map, the key is to be able to very rapidly and efficiently capture fragments of related information (nodes).
AT 3.1.5 does not make this fluid at all.
When a node is selected, there needs to be a quick way to create a “new connected node” or, if a node has a connection to one other item, then also an option to create a “new sibling node” (i.e. a node that is connected to the same node the currently selected node is connected to.