So, I think I see the reasoning behind the Court. It seems odd that you can only bring three people into it when you can have 9 total if the game happens to throw you into the same instance, right? The three person limitation can't possibly be for difficulty then, right? I think it's a subtle form of matchmaking for patrol. It's likely that the final tiers of the Court offer up End-Game Tier-Gear, which players that have trouble forming fireteams have had trouble accessing before. With this system, all one of them has to do is wait around in the Court area until other fireteams show up. The formed fireteams won't have any control over who gets put in with them (no LFG gear or experience restrictions), and if the fights are designed to be beatable by three people, any help they get will be welcome (especially if this person can add "sacrifices" the others don't have). The other mechanics that require playing through the lower tiers also support the idea that this was designed to help solo players. Sorry if they spelled this out clear as day later in the stream; I shut it off when the first two bosses weren't even reskinned.