Like many have said, I'm guessing we'll be waking up Source G'raha. They kept talking about the Allagan blood in previous patches, so we'll probably be carrying it to the door via the crystal that Exarch G'raha has been fiddling with. Pretty sure the trial is gonna be against Elidibus, no way they are gonna just let us end the arc on the First without eliminating the last threat to it.

On that note about CT, Natsuko Ishikawa posted a interesting tweet some days ago: https://twitter.com/kinacchin/status...76393267847169

Google roughly translate it to:
Chronicle Quest: After clearing the Crystal Tower, the equipment used by Nero when investigating the tower is on a "certain map" that will allow you to go after the jet black (Shadowbringers). As a member of Noah, why not look for it?
Anyone interested in a treasure hunt?