King's Fall isn't an actual true challenge. A challenge is also supposed to be fair. Like the Artorias boss fight in Dark Souls. King's Fall is full of artificial difficulty. Which is a fake challenge. To many bosses with way to many mechanics in an activity that lasts to long is artificial difficulty at its finest. After the failure of a raid called CE, also not a challenge but on the opposite end of the spectrum from King's Fall, Bungie thought the solution was to make it longer with way more mechanics but that just flooded the raid with way to much BS. How is it an actual challenge when your team has to wipe because 1 guy accidentally fell off of his platform while trying to dodge damage? I see it more as artificial difficulty crap. Whereas losing 3 people and still managing to destroy the oracles, open the portal, and acquire Time's Vengeance is still quite a difficult challenge but a fair and possible one at that as long as there are at least 2 people alive.