He's a superstar. I hope he cleans out LW before he moves up to LWW. He has lots of challenges at LWW. Mathysse will give him lots of trouble. Khan, has the ability to outbox him if he can stick to a gameplan. Other guys like Rios and Garcia will get eaten up by him. PEDerson will lose, too, but may make things interesting.
I'm guessing he will defend his lw title one time, against Burns or whomever that may be. Then he will be looking to make the biggest fights possible, which will probably be at 140.
Boxing isn't big enough in the UK. Why would an American fighter come and fight in the UK when they could make more money in the states. The fighters team make these financial decisions, the fighters themselves would usually fight anywhere.
by the time Broner moves his way up to WW, Brook will be up at 154.. Brook's too naturally big for Broner.