Radcliff has already broke out in a way with doing Equis on broadway. Quite a different role for him. Ruppert has done a few movies...I think they were all smaller films. I think we will have to wait and see what the trio does after the last film has been released. Regardless, they are all set for life. With all the rumors that one or more were thinking of quitting, I bet they are happy they stuck with it at this point. I am even more impressed with the fact that so few actors were changed throughout the films. Dumbledore is the biggest one, but that couldn't have been helped. The only casting change I can think of in this movie was Hermoine's parents who had a brief appearance in Chamber of Secrets.