As long as you have trust on the DTs judgement, I think red trust should work. Question is/are...

Do we really blindly trust the DTs red trusts?
Have they positioned themselves much higher that no one will questions their red trust? Not from the fear but from the basic moral.
Do they take enough time before leaving a red trust? A wrong red trust left by them can harm the user in many ways.
Do they give the other person enough time to explain? People have reasons for the acts they do. They have the rights to explain.
If they make mistake on leaving a red trust do they consider a review standing from a neutral point and compromise their ego?


There could be so many parameters to judge the DTs red trust and if you are satisfied and confident with the red trusts they leave then only a red trust should work.