If you accidentally delete a brandset / the wrong brandset, the data still exists in the platform but you don't know which brands you need to re-add when creating a new one to replace.
A revisions section would allow you to see changes to brandsets to know what profiles have been removed to know if they were a mistake and need to be re-added
Internally we will benefit to understand whats happened on the domain but also if the client makes a mistake, they know where they went wrong and what they need to do to rectify (also we can help diagnose to know what the client has done