Simple. They'd make the content easier. Which they 'have'. It's called Crystal Tower. Crystal Tower will be easier than Coil. It's made to be DF for those who want to raid. The gear will be weaker than that which is in Coil, yet its a step above DL. It's pretty much the end between. And it's made easier to take a larger number of people, plus giving those of you who would rather DF than raid with a FC to be able to enjoy. So you are getting your endgame raid dungeon. Just got to wait till the upcoming patch.