For me Caverns of Time dungeons are epic and it's really sad that we didn't get a new CoT dung during Mists of Pandaria (or any other dungeon -.-).
In TBC we had Escape from Durnholde Keep and Opening the Dark Portal. WotLK added Culling of Stratholme and Cata added the best dungeons in the game to this day: End Time, Well of Eternity, Hour of Twilight.
Now in WoD we will be involved in time traveling so it's a great time to have new dungeons in the Caverns of Time.
Do you want to see more Caverns of Time dungeons in one of the WoD patches or in the future expansions?