Well finally listening all of the STAR WARS commentaries I must tell a small story.
Being born in 1986 I haven't been around for the original trilogy. At least when it came out to theaters. I really can't tell when I saw the originals first time, but I have clear memory of liking them every time I have seen them. I had some toys when the re-releases came out. I have ALWAYS liked them very much.
On 19th of May 2005 Revenge of the Sith opened in Finland 00:02 AM. It was midnight opening. I went to see it with my now ex-wife. I didn't like Phantom Menace or Clones at all. I thought they were badly made and it was a real shame that they fell under the name STAR WARS. Yes I did like them visually and I think there are few nice scenes on them but I hated the fact that there was no story to tell. So the opening titles came on Revenge and I had decided that I will give the movie a change to start all over again.
So the two hours went and I was sitting in my car and driving home. While seeing Phantom Menace of Clones I did have strong feeling of dislike from the start. Now I was sitting in the car and I had to ask my wife; What do I think about the movie? I didn't ask what she thought of it but I asked what I thought of it. I just couldn't made my mind. My mind was saying it was a bad film and it never made a good story. It felt like the three new ones where total waste of time. At the same time my mind was also saying that maybe you didn't just understand it. So problem continued to next morning. I woke and realized it sucked. I didn't like it. My mind wasn't just able to understand that they had f*cked up so badly.
Then I had an idea. George Lucas took one boy as an example. Let's say he was at the time of the Phantom Menace only 10 years old. So he made a movie with droids and lightsabers. COOL! Next one came. Now the boy was 13 years and George decided that he can give the movie a little bit more action and darker tone. Anakin losing hand and so on. Then came the Revenge. Now the boy was 16 years and there could be death and all that. So I think Lucas made the movies to a specific age group and totally forgot the rest. I think it was way to bring a lot of people to STAR WARS and that group of people was all young. He just completely forgot the rest of us in the process.
I think this was done in the Harry Potter books. Maybe Dorkman can correct me if I am wrong. The feeling of Harry's loneliness and dying around him came step by step. Which is natural cause the story took some time play itself. Still I think my theory is well explained here. The people who loved the first Potter book when it came out in 1997 were gown ups when the last one came out. So the story and the darkness grew up with the reader.
I think Lucas tried the something similar but forgot that the story didn't work enough for the majority of fans that already existed.