I personally think the trust system itself is flawed as you may never now when a user decides to perform an exit.
He might have very good feedbacks but could exit at the end... Or the trust can be easily faked... Why would we need a decentralized trust system?
Was wondering this too, brokers activities are recorded on blockchain, ok, but what if a broker decide to quit operations and scam investors? It's like hella easy to withdraw all investors' money, a couple of transfers here, a couple anon coins there and moneys are disappeared. Now I'll read the whitepaper maybe I'll find my answer there