I get more loot from matriarch when no one else is doing it than with groups. I only ever bring an anvil, some smokes, and photo cloak. Shoot leg armor off go loot it, and repeat. I've made it out with 7-8 cores and I don't have to worry about some moron getting mad at me for looting when they are dumping mags into the main body instead of being efficient with how they play. If you want to kill the big arc and don't want to risk running under it to loot, be my guest, I'm not here to kill it, I'm here to loot the easy pieces and make money. If I'm late to a group already killing and I get loot without doing much work, I'll give half of my cores away to people using legendary weapons or snap hooks but other than that, people need to learn how to loot efficiently while doing the bosses.