You might have seen me supple on the forums as of recent, but I have a mission! Myself and quite a few nameless advocates wish for the return of the Prison of Elders, and the infamous Challenge of Elders! The idea is very possible. If you consider that in the heroic public events of the escape pods, we do make the proned Wanted go into an ephemeral cryostasis, and afterwards we transmat the fugitives back in their respective prison cells! And for last I remembered, through and through, not all fugitives left their incriminating vault. I don't expect the Reef's Prisoners to look as glamoured as once it had appeared, but the return of such a magnificent mode would bring this expansion an even more reputable justice! Other than that, I do want to offer the idea of bringing back Archon's Forge and Court of Oryx! The Dreadnaught has so much untouched potential, and the same about the Archon's Forge. Please upvote this post for just a glimpse by Bungie!