Identify users who did massive changes (and perhaps massive mistakes)

We have a large use base (1,000+) on our asana instance.
Sometimes we notice unexperienced users who make mistakes.
It would be ideal to identify massive changes and reverse them.

Unfortunately there is no easy way to identify large amount of changes, other than reading the audit trail on a task by task level, finding out who did what, when we realize that something happened to a project.

It would be ideal to have a more sophisticated way to realize when massive changes occur to a project or a portfolio, and an “undo” option.