I doubt that. Look at the pattern of the Bosses in King's Fall and the weapons most teams use against them: The Warpriest & Golgoroth: - Black Spindle, 1KYS, Sleeper Stimulant, Qullim's Terminus Oryx & His Daughters: - Touch of Malice, Sleeper Stimulant, Qullim's Terminus (Black Spindle/1KYS optional for Daughters) Aside from Qullim's Terminus, the Raid Weapons are barely needed for King's Fall, most people get by with their vendor weapons just fine. The Taken damage bonus is also irrelevant - None of the Raid Bosses are Taken, so if even if you were to use them, you'd only be doing more damage to Taken adds, and nothing else. Adding a Secondary Perk branch would change nothing regarding LFG sites ... I have yet to stumble across a post of that nature (I.e. 'Must have <Insert King's Fall Raid Weapon Here> or you'll be kicked'.