Why not suspend reported images for review. If the review indicates the reporter is abusing the system, blacklist the reporter from the automatic function. Also

Why not suspend reported images for review. If the review indicates the reporter is abusing the system, blacklist the reporter from the automatic function. Also block new and recent accounts, and stop automatic blocking for images on frequently targeted accounts and major accounts (e.g. If someone is reporting Donald Trump, manually check, don't automatically remove).