I assume you envision this data only being available to mods and admins? If so, I support it. I definitely wouldn’t want any form of “hall of shame” visible to the public.
I’d add it as a new menu item here, with the stats you mentioned:
I have a strong suspicion our “Something Else” report has resulted in quite a few users unrightfully accumulating flags. This feature would help shed some light on that.