Mosley and Mayweather won't fight Williams when they can make loads more $$$$ against each other. Cotto won't fight Margarito either because he wants tyo go forward, fighting a guy who lost his last fight is not going forward, it would be a great fight but unfortunately i don't think it will happen. The fights i would most like to see are:
Mayweather vs. Mosley
Cotto vs. Williams
Cintron vs. Margarito