ItemModertorStatusChanged event receiver
ItemUpdated event receiver is a very rough async process that blocks SharePoint functionality heavily. It can't be empty since workflows communicate with SharePoint using it. My Suggestion is to introduce a ItemModertorStatusChanged event receiver. To obtain backwards comptibility, it should be a tick box when creating a workflow in SharePoint Designer to use ItemUpdated or ItemModertorStatusChanged event receiver.
Thanks for your feedback! Although we appreciate your time and effort to give us this feedback, it’s not something we’re planning to do right now. Your suggestion does make sense but would require changes across multiple areas, where we are not currently planning to invest.