Loser of PBF/Mosley Williams/wintron winner Margarito Alexander Bradley Cotto/Foreman winner Zaveck Clottey Collazo II
Winner of Cintron-Williams or Mayweather-Mosley loser. Anything else would be a huge disappointment. Berto needs to face a real test already, he's the WBC champ!
Pacman, then Pac is WBO/WBC/Ring WW champ and fights winner of pbf/ssm for the WBA/WBC/WBO/Ring championship. This would obviously be a warm up for Pac.
I went with Cotto, though that depends largely on how he does with Foreman and whether he's willing to return to 147. I'd try and match him as strongly as possible without going after Pacquiao, Mayweather, or Mosley (unless he loses to Mayweather and looks to have aged significantly).
Collazo or Clottey.... I would really like to see Collazo get a rematch, and it would be a winnable fight for Clottey and a decent fight at the right time for both guys.