When a cable is selected, some information is shown about it in the info panel. This would be similar to selecting a node, which shows info on this node. For a cable, this could be data type, event throttling.It might additionally include a simple version of Console, if possible. For example, showing the last 5 data points etc—saving the user from attaching a Console node for debugging purposes.
This panel could also expose the same right-click functionality, including 'Insert Share'.