Yet despite these visual warnings, many fall victim to these same scammers who send them PMs and offer various methods of earning, or help with unconfirmed transactions, blocked crypto exchange accounts and similar things.
I think blocking transactions from these guys will still be hard to implement even when discovered the tx or any identity used. Also exchange wouldnt care probably unless they have enough time to listen with these scammer's issue.
P.S; I would suggest members with active flags have a warning banner show up when they message other members or newbies, below x days total log in time.
How about totally restrict a PM message for those who have trust flag that has been so many negative tagged and feedback. Sometime with small chances they can still send some wouldnt noticed the idea of trust system. So they wouldnt know if legit and scam, mostly newbie falls for it.