I agree, with Bob Arum's experience, Inoue can be the next biggest star, although we can't compare him with Manny's enigma and charisma though. But Arum + Pacquiao at his prime? they put a the blue print, on how someone from Asia conquer the boxing world but carefully nitpicking their opponents.
Naoya Inoue should be doing good at 122lbs.
I think that's the max weight he can conquer different from Pacquiao that his body also evolves to fight at a maximum Light MiddleWeight. Bob Arum can really make a boxer's career good even though lots hate him. He is a professional in building a boxer's career.
Arum is not playing a kid's game that's why part of his strategy is to pick opponents. Love him or hate him, it's also an advantage to his boxer, not just for him.