Well, it. Would be hard for moderators, but honestly most people wouldn't fill it out, so, more or less it would somewhat decrease the complaints of scams. It is a very good idea to take snapshots of money donations, contacts, and trades.
We could also do casino license, since a bunch of people get " Cheated" on by small lotteries, gambles, etc.. It would be helpful and also reduce the amounts of complaints, because it is a simple rule, you sign, you can't complain.