I am by no means a Floyd apologist/hugger, but I have a slightly different view than most. In my opinion, Floyd was willing to push himself and sought out the biggest challengers until later in his career. The Castillo fight affected Floyd to a degree, but he continued to seek the biggest fights and turn himself into the PPV cash cow.

Once Floyd beat Hatton, I noticed a slight change in Floyd, where he was content to let many of the big challengers beat each other for the right to fight Floyd. That isn't a bad strategy for longevity and career money, but it did cause him to miss some of the bigger names of his generation. That being said, I don't think Floyd ducked or was scared of anyone, he just made sure to be a good businessman and fighting individuals for the most reward with minimal risk.

Now, to answer the main question: Would Floyd fight Leonard/Hearns? I would say that he likely would not, UNLESS, that was the ONLY way for him to become the cash cow and make the money he always felt me was worth/demanded. Floyd may be uneducated, but he is an extremely smart man when it comes to fighting/boxing, and I feel that he would procrastinate as long as possible with the hopes of avoiding Hearns/Leonard, knowing that he would likely lose to both. I have doubts that Floyd would beat Pryor at 140, so the push for the Leonard/Hearns fight would likely never be very strong.