@STAFF_Yuri wouldn’t it be a good idea to add a bounty/reward system now?
If the point of first stages is analysis there could be an event (or maybe permanent feature) to incentive players to report and help to enforce the policy. If you combine this effort with the Report feature on market it could be a nice thing.
This also makes me think of a possible suggestion, a “witness” system or something like a “secure trade system”.
Given a special 1:1 trade you could allow the assignment of 2 players to a transaction, 1 for each side. This already happens unofficially at times, like, when people were selling Solmiki 40F Weapons.
By using the witness system all 4 involved players would agree to be punished if there’s illegal activity, the trade isn’t completed until GM revision and it allows trading silver directly.
The GM would be able to allow the trade, object it and/or punish all involved players for the illegal activity.
Of course this assumes a low number of trades like these so it doesn’t become a burden or a long waiting process. But could be interesting to give players a way to start special trusted trades in a legit way that gets a GM validation directly but also reviewed by the witness.
As a safe measure, make it so witness must be on their friendlist for X days or weeks and be Y years old and this could allow you to be harsher on unusual transactions without hurting honest players.