What do you think of Pacquiao's path towards greatness?

Pac's legacy has already been solidified. Pac will alweays be remembered as the boxer who climed weight divisions from Jr Flyweight to Welterweight (and in the future Super Welterweight) and conquered 7 world titles in 7 different weight divisions, 4 of them lineal titles (probably 8 in the future). From now on, the question is on where he ranks among the all time greats. Everyone with decent boxing knowledge knows Pac is inside the Top 35. But to be certain he is in the top 10, he has to beat Mayweather when Floyd mans up or possibly beat a top contender in Super Welterweight.