I've inly ever kicked one or two people from a nightfall before. I remember one very well. I hosted and invited 2 randoms. One was a mature fellow who was a good player, the other was a kid with a squeaky voice (you know the type) who joined halfway through, and I told myself I'd put up with him if he held his own. I judge gamers by their attitudes and choices, not their age or voice. So we make our way down the cave to nexus mind Sekrion, and well ahead of time I tell the guys were going to stay on the cliff. Myself and the other mature guy stay on the cliff, but the kid says "hey I know a hiding spot but it's tough to get to." He then jumps off the cliff, dies from the fall and says, "I'll be right back, don't res me." "Don't worry, I won't", I said. -player has been removed from the fireteam- We then killed the boss, just the 2 of us, from the cliff. I didn't fee he deserved nightfall rewards for a stunt like that which made him useless to the team. Edit: moral of the story. Always host. You can always find people who want to join you, and you have the power.