Here's an idea, while you just completed it, let 5 leave and start a new raid. Maybe thats a start to a new idea. How long can you stay after the fight, does it ever take you to orbit? Is it possible to prevent it? I was thinking about the legend of kabr. About how he was alone yet he did not enter the vault alone. What if his friends are in another instance fighting atheon, while kabr is lost in time? Or somwthing like that. Maybe something to do with gorgons since they erased his friends. I dunno, i just wish the lore has some actual connection and hints to the contents of the raid.