Honestly, sometimes I think we should just get rid of the trust system and just let users leave feedback that doesn't effect a score, but of course this would really only benefit scammers who would then have a field day without their red paint, but maybe we should just let people be reckless with their own money. Whatever we do to try curb abuse people will just abuse that or find a way to game it so there's nothing we can really do to please everyone.
In my opinion, a much better option is to add lots of new DT1 members. Current system is an elite system. It needs more DT1 members so it loses its "high status" it currently has while not serving its purpose properly. Current DT1 members are highly inactive, and those few who are responsive are not really into adding more DT2 members, because apparently current DT1/DT2 is very unwelcome against new members. It's an elite club, and it has tribes, and that is
not the purpose of DT at all. I wouldn't be against ditching the whole DT system completely.. and let members make their own trust lists.