If u r talking about reputation score, anyone can get hacked with 60 or more reputation and it will take alot of downvotes to reduce it to negative score (till then, more accounts would be compromised).
This is a stake based system to protect the nature of decentralization.
If you are talking about few people reporting it, then have high requirements and u can follow proxy (same proxy proposal and witnesses but a sperate proxy feature to not merge with those 2) reports of anyone thus your REPUTABLE reporters can also fit in this current model. Sorry I am not understanding u currently. Do u mean reputation score? If yes, it's not effective in this wide spread airdrop scams and memo transfers. Some users recover account in 5 days at max so we have to negative reputation them which is a very serious punishment.