With the new Repairs integration I think it would be useful to show any automations which have an “unknown action” in the actions, when a referenced entity has been modified and can no longer be found.
Also, it would be nice to raise a notification when an automation has an action that fails (possibly due to the above) - sometimes my automations fail and I don’t see until days later.
I believe that PR will report a missing service call, not a missing entity. So it doesn’t appear to fulfill this part of your FR:
when a referenced entity has been modified and can no longer be found.
In addition, it doesn’t mention that it will report an action that has failed (unless it’s due to a non-existent service call).
FWIW, most of the errors that occur during the execution of an automation’s actions are reported in the Log. There are examples, posted in the community forum, of creating a File Sensor to monitor the log for specific issues and then report them via notifications. Obviously your FR would make it easier but I thought you might like to know that others have tackled this issue another way.