I just want to clear this up... A traditional fire team is 1 of each class for a reason, take the 35 PoE for example. Titan: The bubble is a must for every round. It is just so helpful to the entire team to be able to just chill in a ball with a buff. Hunter: The invisibility is a huge benefit to the entire team. If everyone else is dead they can simply move from place to place going invisible until they can easily go invisible and safely revive someone. They can stealthily dismantle mines and assassinate important targets. Warlocks: The lifesaver. The backup plan. The warlock. Radiance is quiet possibly one of the most important pillars of a fireteam. The ability to save the entire team from restarting a round is just invaluable.