I have a theory. Once Atheon is dead, you need all 6 members alive, you get 1 person to stand on Mars portal and 1 on Venus, this then opens the portals. So with 2 players on plates (They stay there) 2 players go through Mars and 2 players through Venus, they then stand on there corresponding plates, so like this: Mr A - Venus Plate Present Mr B - Mars Plate Present Mr C - Venus Plate Future Mr D - Mars Plate Future Mr E - Venus Plate Past Mr F - Mars Plate Past 6 Plates all activated at once, wouldnt that be worth a chest? I haven't tried this, as I just thought about it right now lol P.S Bungie, if I'm right, I think I deserve something cool :)