I agree that grouping is messed up for this type of game. I ran into a person doing the same mission as me and when he invited me to his group it kicked me back to the beginning and restarted the mission. Plus I had to leave the game and go to the PS4 menu to even accept the invite! Does grouping up with people have to be this hard??? Even though I am in a Clan, I cannot see the people in my clan online or ask them to join me in game. For a social game I feel awful lonely.