Ronnie Brown turned the corner after that week 3 game where he had his first long run. Ever since then, he has looked very strong running the ball, and he could be a stud if put into the right system IMO. Next year maybe.
Problem is, Ricky Williams is snaking a few series here and there. And more importantly, Miami is not a very good football team in general right now. Sure they are still in the AFC East race right now, but that conference has turned surprisingly weak this season. Miami's O-line is not very strong, and their QB is prone to mistakes, and the running game suffers. You just have to hope that their defense can beat up whoever they face so they can get those 25-30 carries as a team. Then Ronnie might get 15-20 and be a solid producer.
Right now, Ronnie Brown makes a decent FLEX RB, or a RB#2 when he has a matchup. But I'm not really liking that schedule anyways.