I agree that it is not as simple as Rondo just deciding to take the wide open shots that other teams' defenses give him. He needs to establish himself as a legitimate scoring threat with the pull up jumper in transition but probably more importantly, off of a pick and roll set. Once he starts forcing the defense to adjust to him (both his man and the other defenders), it will make the other players on the court better because they will have more space.
Making other players better is not just about flashy passes. Rondo can flashing pass with the best of them. With his court vision, if he was able to force other teams to double team him off the pick and roll or to otherwise force defenses to adjust to him, he would be able to create more overall offense for everyone else. And I don't mean assists, I mean a pass that may lead to an assist but more importantly, passes that lead to more passes that lead to easy buckets and open shots for everyone.
Rondo could be that type of player with improved shooting (and please, stop with the 49% shooting stat, every team in the league sags off Rondo because he is not a shooter) and willingness to make the "next" pass, not always hang on to the ball and look for pass that will be an assist.
Last year was supposed to be the year that he would look to shoot more but excuses were made for him because he was coming back from surgery. This year is supposed to be the year again. Rondo looked fully healthy to me last season so I am not predicting a much different Rondo this year. Others saw it differently and felt he was not full speed. It is Rondo's time, let's see what he can do. I am looking forward to the season.