Thread:Feedback/Stopping bad signatures?/Kexford

What about impersonation signatures? I mean, if someone created John Q. Doe account and there was a notable John Q. Doe editing, it would present problems in terms of attribution if the user was renamed as the old signatures still show in the diffs/page histories.

With regard to resetting user's signatures, maybe higher-level users, like bureaucrats/stewards could do this?