That's brilliant and wise idea but I don't think it could literally destroy and stop scams and fraud around the crypto community. Scamming varies in many types and scammers could attack exchanges or even users personally. The best thing that we can do is to start the awareness within ourselves.
I think that method also does not stop fraudsters even though this method is very good but in my opinion if it is not captured by fraudsters it will continue to repeat it. Yes, as you say that fraudsters are different and have thousands of ways to benefit from investor money, one of the most important things is that we have tried the best and the rest we pray that the fraudsters get the same punishment.