Trust plays its roles with trading issues and you are right by suggesting Positive Flags. I guess you mean you suggested other colors for Flag Boxes if Numbers of Oppositions outweight Supports. If a Flag Box, mostly opened to raise Warning, and in most cases Supports outweigh Oppositions for sure. Therefore, I guess such cases (that you want to see with Positive (Oppositions>Supports) Flags, that should be displayed with other colors are so rare). Moreover, I believe by now DT members have lots of things to do with current Trust Flags (without such Positive Trust Flags you suggested).
I don't think reporting scammers relate to three usecases of Trust Flags. Reports will be read and solved by forum staffs, and community are unable to support or oppose reports. It's very different.
I think that several of the problems with Trust were because three different goals were being jammed into one system:
1. Getting a general idea of someone's trade history and trustworthiness in one convenient location, sort of like reviews on sites like EBay.
2. Warning newbies/guests who don't know how to research properly about high-risk people.
3. Deterring scams by creating a cost to scamming (ie. you'll "lose" a veteran account).
A reporters badge is on the way just give it more time.
I think reporting 500 posts for spam deserves a postive trust flag or icon.
