3) some people on default trust even make a hobby of marking red on people who haven't ever traded with them but with whom they simply disagree (see, for example, Vod vs MSCorp Key Sellers; or Quickseller vs. people who refuse to do business with him (
https://bitcointalk.org/index.php?topic=1023038.0, inter alia))
Trust isnt moderate and everyone has the ability to give negative trust to someone based on his judgement, but only those of default trust will be visible to the other
In this case, vod and quickseller got their own point of view regarding the matter and also the red trust is merely a guide for people to do some extra caution while dealing with user with red trust
allow people to build their own trust networks based on experience.
You can already do this with the current system, you can exclude vod or quickseller as well if you wish
3) Replace large red "Warning trade with extreme caution!" warning with softer, yellow "This person has received negative feedback from someone in your trust list." Even just this latter fix would help calm the hype, imo.
This is unnecesary if you build your own trust list
But I will propose to make a specific colour for neutral trust, because a neutral trust from default trust list member isnt visible unless you click on the trust score to check. This could be one of the reason why people like to put on negative trust rather than neutral trust even if the issue is already solved