Morales/Barrera (yea they hate each other but combined they'd make a boxing god, Morales' awesome ability to go upstairs, and Barrera's incredible body shots simply amazing)

Trinidad/De La Hoya (the speed, movement, chin and awesome boxing ability of Oscar De La Hoya, and the stamina, heart, and brutal strength of Felix Trinidad awesome combo)

Holyfield/Lewis (Holy's chin, stamina, heart, and courage, with Lewis's boxing ability and size we wouldn't be in this mess of a heavyweight division)