Light level doesn't matter in Crucible unless it's Trials or IB. There doesn't need to be a light requirement. Just a level requirement, like the game had until TTK. The light system, along with random stat gear, and the infusion system does nothing but increase the grind. The -blam!- do you know anyway? You're a Taken tot, that hasn't completed shit in game. 3 raid completions? GTFO of here, kid.