Pacquiao is definitely p4p right now. A match-up between him and J.M.M. for a third time is a fight of great interest. However, I would like to see Mayweather come out of retirement to fight Pacquiao after he finishes off Hatton.
As elusive and defensively supreme as Mayweather is, I don't think his beard has ever been tested. And as awkward and confusing Pacquiao is, I can't see him not landing a solid shot on Mayweather.
I think that's the fight to be made. Mayweather will not stay in retirement - especially with so much money on the table for such a classic fight.