Mosley wouldn't fight him, Cotto hadn't proven himself as a WW, and Margarito before Cotto would have given Mayweather the same amount of respect as beating Baldomir did, and now that he has cheated it would have been even less. I think now that Pacquiao has risen to such heights, Mosley who has risen to his heights, and Cotto who is now forgiven for his one loss(because Antonio cheated no doubt) is still deadly and could have MOsley and Pacquiao under his belt imo there is more for Floyd to build his legacy on. If Berto continues to improve, and if Clottey beats name fighters that could only increase Floyd's legacy, but I doubt he would fight Clottey who just isn't a big enough draw.