With FTP I'll imagine any Shark / Scammer crackdown team will be pretty hard to manage. The rules are simple and in place.

- If you've been highjacked you get your shit back

- If you did a trade it's unfortunate but sorry we can't help you

Unless they change their TOS I will think there's legal grounds around reversing any trades in this market, fact is to the letter of the law all these items have no value.. if someone was to trade a Burning TC for a crate valve have no legal right to reverse that trade.

If Valve cared best thing they can do imo is educate the unboxer before they get sharked rather than worry about catching / punishing the Shark. eg. The crate says something of the lines of "there is a 1% chance your going to unbox something rare" but if you were to unbox an unusual you don't get any indication that it's that 1%..... a noob could have 1 key / 1 crate not read or remember the contents of the crate get an unusual and think it's normal, but if they had fireworks going off in the background and a note saying "Congratulations you just unboxed a very rare unusual, this may even be the only one of it's kind" I will like to think they will think twice before trading it to a random and if they do they have no reason to complain.