I just ran into a problem where I could not reverse a change someone made on a dashboard.
To avoid this problem I would like to suggest a history log for dashboards. This way I could just load an old version of the dashboard or review the change. I was thinking of the way I can open old word versions.
My case:
We used the text feature on our dashboard. The text was color coded. E.g. red for elimiate, grey for not in use. The team member made a new text field, cut and paste the text in but the format including the color was gone. I have no way to reproduce what was done.