Bungie, why would you allow fire teams in Rumble? It doesn't take a genius to know that people will abuse it. It happens regularly that a fireteam of 2-3 will join and group together. I recently switched from Control to Rumble to not rely on crappy teams and go up against fireteams and I am pretty pissed that this is an issue even in freaking FFA. Please introduce private lobbies, so friends can play friends and disable fire teams for public Rumble matches.