At some point, between 3.0 and 3.2, the FATEs required to unlock Crystal Tower were nerfed. Players can now easily solo the FATE bosses, which does go some way to accomplishing the goal of making it easier to unlock.

However, because of this, the FATEs are only up for 25-50% of the time they were up before, so the window of opportunity for someone to participate is actually smaller than it was before. Tab out of the game to pay your bills while you wait for a given one of these FATEs to spawn, and you risk it spawning, being started, and being completed before you can tab back in.

What I would love to see would be a way for players on the quest to trigger the FATEs, or a boosted spawn time to coincide with the nerfed FATE bosses. A player should not have to wait for three hours in a location to wait for it.

Either that, or remove the FATE component entirely, and make it so people can get the items they need from Rowena's House of Splendors.