Ronda vs. Floyd Mayweather
Not anytime soon. The UFC isn't there yet, and that fight was a unique situation with all the stars aligning that boxing can't expect to match that number anytime in the foreseeable future.
Also, I think Mayweather/Pacquiao was such a disappointing fight for so many people that it hurt the overall PPV business. A lot of those people who shelled out $100 to see a stinker of a fight are going to be pretty gun shy to buy another PPV.
Loading up a card with the top and legendary stars and great matches....?
Rousey vs Cyborg....Silva vs St. Pierre
Loading up a card with the top and legendary stars and great matches....?