By the way, I noticed the botadmin group can grant/revoke privileges like bureaucrats and admins (patroller, rollbacker, image reviewer), etc.
Could you check if this is a wanted behavior and discuss it with the community if not?
Since the abusefilter user (the user account that blocks user and revokes patrol rights, etc.) is a botadmin. IMO it shouldn't have the right to revoke admin, 'crat rights but it should be able to strip out other rights like patrol, autopatrol, confirmed, uploader, and several other rights.