On the other hand, the tool must have an Ignore List (folder and files which won´t be scanned for safety reasons) by default, with the possiblity of checking/unchecked/add/delete items by the user.
In addition, CCleaner must be keep the capacity to clean all user accounts like the current version nicely do.
The most applicable examples of the proposed utility from other software are: Ace Utilities (Remove Junk File tool) and Wise Disk Cleaner (Advanced Cleaner tool). The first software would be of preference because it has more setting options. I invite you to see those softwares and their settings. These would be the ideas.
The “new tool” in CCleaner can be another “Tool” inside the tool lists on the left of the user interface, or a new button in the list of them on the left.