I thought it would be an interesting factor to add on to the competitiveness. The Traveler faction vs. The Darkness faction. Faction wars could be initiated as public events and over the span of the event the team with the overall amount of kills may win a reward of glimmer at the end for all the people allied to the faction. The more you fight and strategize the more you raise chances of winning. That's why I thought of becoming a rogue yourself. An AI enemy rogue could serve of just as much value to the story though in the same way.