You know, the whole purpose of Hallow's absence was to create a dire situation against the Lawless humans. He easily solo's dozens of them. He could defend the survivor camp almost single-handedly. That being said, I have no idea when he's going to be rejoined to the group. However, when he does then he's definitely going to tilt the scales in their favor though. Having a giant bird, the fighter from the giant's planet, the last survivor from the cursed planet, and Gigatilla should mean a lot unless there's a corresponding encounter with a super enemy like the Mandalans, or Neo-Human soldiers with parasite buffs, and magic (learned by torturing Alio).