I really wish they'd release an optional "challenge mode" of CT1 with the same tuning and mechanics they were using at launch (and with support for 24 man premades), before they made the decision to delay it for retuning and nerfing. I'd run it even if it didn't drop any progression loot simply because I'd love some challenging stuff to do with all three of my FC's raid groups. Perhaps it could grant vanity stuff instead of gear upgrades.