Let's face it, scammers are one of the worst parts of the game, and almost make it unplayable. One thing people have requested over the years is an official trading system. Just think about it, that would make the game so much more efficient and would make it a lot better.
Here is my extremely rushed and badly edited "concept" trading system. This is the ROBLOX trading system. It's quick, efficient, and easily accessible. You would be able to accept, counter, or decline. Now, I'm not saying completely rip it off, but definitely get some inspiration off it.
Thanks. Please read this Carbonated!