What if the reef had a patrol mode were you could explore destroyed ships. It would be like regular patrol but you would stumble across large groups of dregs and vandals with one or two large captains or mini bosses. You would then have to try to kill the captains and try to leave as many of the weaker fallen alive. These fallen would then have no one to follow and would join the house of judgement and follow varkis. This would give you rep for him or unlock special gear. The main reason for getting the fallen to join the house of judgement would be that once you get enough then there would be special missions that would have you lead dozens of loyal house of judgement fallen to attack enemy strongholds or bases. These would be very well guarded but would have good chests inside (and it would just be freakin awesome to lead fallen into a cabal war base and fight next to one of those fallen walker tanks) There could even be a part of the story later on where varkis betrays you because he gets so powerful and since you were allies the house of judgment would already have been allowed in the tower so you could have missions were the fallen got inside the city and you have to take it back/defend it with some fallen that are still loyal to you or maybe even fight with some of the vendors in the tower now. This would open up a new area and make the reef better and used for more than just a social space and the background in PoE. It would also give us a reason to do patrol and make it a little harder.