I think that it would be a good bit of nostalgic fun for destiny year one players to have an exotic quest to get the Vex mythoclast. Steps could include finding artifacts in the VOG, like an Atheon challenge, and modify a fusion rifle core. It could even be something like a Siva resurrected mythoclast. I think that this could be a cool addition to the game, and a fun bit of year one nostalgia.