Gunsmoke pisses me off. I really like the mode and have an appreciation for the damage-contribution dropoff at the end of the fight, since it makes non-whales able to contribute almost as much score as whales do, but bothering everyone to attack the boss and spamming the thread to recruit people to replace corpses both feel like shit.
Why do mobile games do this activity check shit? The mode could be really nice with a couple tweaks to increase variation beyond the daily buffs and removing the need for people who aren't interested to get involved.