Sorry to dissappoint, but making a list of people who are trusted will not affect how others view them. If you add people to your list who have no vouches, still nobody will trust them. If the people you add are vouched, then surely people can see these vouches themselves?
Vouches mainly mean nothing, I was scammed by Chaotic 0ne for $70 because I fell into the trap of trusting him due to 70+ vouches, what I later realised is they were all for like $3 trades. All I'm saying is if your trading with somebody, check each vouch is real, make sure it's actually worth a decent amount etc.
As people have rightly said, trade with caution, just don't be over cautious and lose trades due to it. I always ensure a safe trade for myself, but if I feel safe I'll go first. Use common sense and you will be fine.