I think that 3 players are enough for coop, however for Explore/FreeMode I think we should be able to have all 6 fire team members in one session if we so desire. Only having 3 players causes problems if there is more than 2 friends online. Story missions I can understand a 3 player limit. I just think FreeMode should be different in terms of player limit. I'm also not sure if this questioned has been answered. If so, could I have a link?