I enjoy the unbridled hubris that you seem to believe that you are the sole arbiter of what constitutes fun, rather than it being a subjective opinion.
Critics keep strawmanning, saying "Don't make CoP hard again, it's unfair to players who haven't finished it!" Except NOBODY is suggesting that. The suggestion is clearly "Make a classic, level capped version OPTIONAL and with material rewards to entice players."
I did CoP back in 2006 with a static group. Though it was challenging, and stressful at times (Airship fight wasn't so bad, but Snoll Tzar took 7 tries to get two wins for 9 people, and I had a bit of a nervous breakdown once after losing the Tenzen fight). Still, it was the most fun I've ever had in my years of playing the game. Because we couldn't just coast through. We needed 6 people, all fighting at the top of their game, displaying top notch teamwork. Nothing before or since has fulfilled me that much. But listening to some of the critics, you would think that I was deluding myself, and that my opinion is wrong.
Look, I am glad they removed the level caps. I want this beautiful story and the beauty of Al'Taieu to be open to anyone, not just those lucky enough to have connections. But how would it hurt to allow people to repeat these old fights, optionally, for fun and valuable prizes?