What I find most interesting in this article is reading a G. Lucas having good point saying that Yoda does not fight because he's not really a Jedi but more a teacher, AND Kasdan answering that he does not like it (so basicaly Kasdan was okay for a Yoda fighting Vader scene in the prequels back then, and Lucas not). It's a bit of a shock to read.

Add to that the fact Leia losing her mother at 2 years old (makes sens in ROTJ context, but not in the actual PT's one) and the fact anyone can learn the ways of the Force (this does not "really" contradict the PT, but well, you better have good midichlorian's count if you want to be a powerful Jedi, all right) and you realize that Lucas knew very well what he was doing when he made the PT... and it was the complete opposite of what the younger Lucas wanted.

All I can suppose, if I still want to look at Lucas as an artist, is that when you think about making a piece of art for too long and stop thinking about it for some years, then when you come back to your first ideas... well, it's kind of boring of just using them as they always were. Know what I mean? Even if they made sens, even if they were the best: just using your 20 years old ideas is boring. You want to find new ones, I can understand that. It's either find new ideas or not making the movies. That's the only good excuse I can find for Lucas after reading this article.