You know what the problem with humans are? They expect someone to keep making a certain something that is their most memorable contribution to whatever it may be when it simply is impossible. That's like telling a band to re-create their first album which is impossible as they have changed as human beings and they don'y have the same mindset they had back when they were working on it. People expected Kishimoto to make another Chunin Exams or Part 1 entirely because they feel it's the greatest thing ever and they expect a person to always be on their peak in life when that isn't the case. Personally I enjoy part 2 over Part 1, but that's another discussion for another day, but yeah do you think it's kind of selfish to expect a human being to always be at their peak in life when there are a lot of factors into why certain masterpieces are created in the first place? Most of the time it's accidental really and the person doesn't realize what they made until people reactions to what they made was highly positive and is getting critical acclaim.