if you do know the true identity of the recipient. then take them to court. it doesnt matter if they stole btc, a goldfish, your wifes underwear or a lawnmower. you can still take them to court
secondly
many people who send funds somewhere do so for bad intentions of getting the goods/service they are buying and then once received. claim they are a victim of fraud to then get thier funds back too.. so any central authority wont just accept a simple victim cry story and you instantly win. you wont be compensated just for suggesting a victim story. you need to know the recipient and get them to defend their side and if proven guilty enforced to repay their illicit gains back to you.
i say this because idea's like this topic presents is not original. they end up turning into silly secondary idea's of making bitcoin transactions reversible if a known jury multisig is used to get the funds from the guilty persons private key. which as i said could be abused by what is termed 'chargeback scammers'. it also opens up other attack vectors of abuse. so it aint gonna happen