I use smart rules to perform not only actions which are common, but also some which are uncommon; one - for example - is automatically moving expired documents to trash. I would quite like to be notified when those uncommon things happen - I thought that might be what the “display notification” or “display alert” action was for. It would seem, however, that the notification/alert is showed whenever the smart rule runs - even if the conditions are not fulfilled, ie no files are moved to trash.
So, if that is the case (and not a bug) then please allow me to request the following feature: display action when smart rule conditions are fulfilled (as far a I am concerned I wouldn’t ever need to be told if a smart rule was triggered (e.g. by the “daily” trigger) but didn’t do anything)