I know it's probably to late as aot is coming next week but here were my thoughts for a vex mytho quest line that symbolises time travel. 1. Complete 390 vog and get shard of glass from atheon.(lucky drop). 2. Return to I Kora Rey. 3. She tells you to scour cosmo drome chests and get 5 armour pieces and 3 weapons, all of common variety.( 1 in 5 chance). 4.Return to Ikora Rey. 5. Complete The nexus strike and earn a legendary artifact known as a "vex ring". 6.Return to Ikora Rey. 7.Do mission "familiar territory" in cosmo drome with all the common gear equipped and the vex ring. (Its literally the first mission in the game but all the fallen are replaced by vex) 8.Return to IKora Rey. 9. Go to Venus and find a strangers rifle frame, go to Mars and find a fusion rifle frame, both while wearing the common gear.(found in the ishtar academy's bookshelves and the fusion in the valley of the kings) 10. Return to Ikora Rey. 11. Dismantle your common gear. 12.complete the mission the garden spire and there will be a puzzle at the end of it,solve it. (All the cabal are replaced by vex)(Similar to the sleeper puzzle) 13. Find the dead vex frame in oryx's dreadnaught. (Located in the dungeons). 14. Return to Ikora Rey. 15. On arms day, visit the disciple of osiris in the reef and claim your vex mythoclast. I'm fully aware that there will be no aot vex quest, it's just that outbreak prime quest emulates a computer, and the touch of malice quest emulates the story of oryx. Maybe necrochasm should have a vicious, hive related quest? Look, vex mythoclast is my favourite exotic and I would love to see a quest for it.