I stumbled on this article Mark Kern: Have MMOs Become Too Easy?. Mark Kern talks about making a MMO accessible to wider audience by making it simpler to reach max level with max equipment at the expense of loosing a sense of achievement.
I agree with much he says and read other posts in this forum that echo his thoughts. There is balance between difficulty and rewards which varies with each player. As a player ages, this balance continues to change.
Balance is an ongoing elusive target.