As of right now each vanguard mentor serves different classes. Zavala for titans, cayde-6 for hunters, ikora for warlocks. They all have armor with random perks. The 3 factions each have different perks on their armor but it's consistent. Future war cult is intelligence and discipline (grenades and super) all of their armor buffs that. It would be nice if the vanguard offered the same. Zavalla sells strength and discipline gear, but for all classes. Cayde-6 does intelligence and strength, ikora intelligence and discipline. This way you could make a build around what you like to use without having to stick to the crucible. Right now focusing your armor around a build requires faction armor. This would give more options.