Time and time again I have join a match with a player I had met awhile before, making it so I had a reputation. In some games I have lied to people but the name of the game is subterfuge, on the other hand there have been times when I have been loyal.
Now some of the angry players come back in later games considering our small player base, then they target me first or don't trust me at all, even though I'm not betraying that game.
A name change each game could make it so no one knows your name until the match is over, making so you have a fair chance no matter what