@Aku SE has nerfed CoP 3 times. I remember before they adjusted the promys mobs and the rest of that round of nerfs.
Now you don't even need a full party to do any of the missions. Duos and solos have beaten airship. I know of only one mission in CoP now the you HAVE to have 2 people to do and thats only to unlock a door(though you can do it solo but could get you banned). So getting help now cause "EVERYONE is in abyssea" is mistaken. What I was trying to get accross is the Devs put more work into that story line then any other and when they seen a large part of the player base hadn't finished. They did spam the crap out of Sky, ground and dyna which all you only could open in a day or two of mission progression. SE then did that with ToAU with all of its endgame opening up way before even the half way mark for missons. Even then they still had to go back and give a really big reward on top of the first reward for people to really want to finish it.