Currently you can see if any of the fields on an entity has changed but not any additional information about the links in those fields. So if you create a custom entity that has a list of "Affected Tasks" for example as a field, you can see if a task has been added to that field but you cannot see if that linked task's status has changed and in reverse you cannot see on the task's overview if that entity's status has changed. This feature would also be useful for existing entities like seeing on the overview tab of a task the status change of its upstream tasks.
Having the ability to pick and choose what is useful per entity would be great to meet individual studios' needs.