The first iteration was that if any change affected the rendering (it is hard part to monitor all the changes that may affects the rendering), the status should be set to PENDING. So, you have to wait for the status to refresh. However, I’m afraid that too long interval would make the status PENDING most of the time.
Another solution we can consider is a new Report Template, so we can generate a report with a list of hosts and all the problems that occur during rendering.