On one of my characters, I now have a permanent 'special quest' for the Sharandar campaign. I have already done some of the quests, and if clicked on the only selectable option is 'goodbye'. it can't be accepted or dropped.
I think the chest can drop any Enchantment, with a chance of it being Savage, Cruel or Brutal. Just checked: Refiner's Cache This cache contains one random enchantment or runestone between rank 4 or 5, possibly even a Brutal Enchantment, or Cruel Enchantment, or Savage Enchantment.
So far, I've only received Cruel Enchantments too. Not sure if it makes a difference, but the Collections page for the CTA: Pit Fight event shows Cruel Enchantments. CTA: Orc Assault and Valindra's Invasion show Savage Enchantments.
Was playing earlier, and got a "disconnected from server" message. Since then, I have been unable to progress past the main menu. The "Play" option is not greyed out or anything, but pressing it either does nothing, or I eventually get a "Timed Out from Server" message.
I think jester is referring to the Gateway, which is advertised in game, but unfortunately doesn't work on PS4, or Xbox One. From what I hear, there are no plans currently to bring it to consoles