I think that it would have been pretty sucky if HP was cast as a well known actor. Granted, he would have done a much better job on the acting side of things, but hey, Daniel is learning, and is much better in the second...
It is so much better that most of the actors have never really had famous parts before... that way it's like this is their character, and you aren't thinking of who they were in another movie or that character!
I mean, it took me about 20 min of the first time I saw PS to figure out where I had seen Alan Rickman before, tought I still think that he's totally the best actor for that part...
I think what I'm trying to say is that it's good that they are all fresh faces!
