Subclass importance to Crota's End

Hunter-Bladedancer: invisibility is a huge help in this raid, especially in the first segment. Warlock-Sunsinger: an all around amazing subclass and spectacular abilities, fireborn capable sunsingers are important in almost any situation. Titan-Defender: Do I have to say it? Weapons of Light and The Saints helmet make this class a force to be reckoned with; after all, how can Thrall hit you if they cant see? Id appreciate your feedback on my thoughts guys.