I don't think it's a very good idea because people could easily scam a noob or even worst somebody could bring his or her friends to there house and tell them I'm gonna scam people we are gonna trade in my house and then somebody comes and one of the friends does a trade and they get something because they are trying to scam and obviously the person that is scamming is gonna get that item that they just traded with his or her friend back and then the person who just came thinks that he's trustworthy and drops an item and bam he gets kicked