It always perplexed me, all you hear about BRD is how everyone loved it, it's always ranked as a favorite dungeon in WoW, but Blizzard never bothered creating another grand dungeon so seamlessly winged and entwined, surely a similar design is worth taking a gamble on again. Not asking to end all 30min scripted McDungeons, but once an expansion instead of having Slave Pens, Underbog and Steamvaults separate, combine them and let players design their own wings, or mega crawl though the whole thing.