I'm not sure if this was asked before, but while I was flying around Dustmallow Marsh I found an NPC character from the Keepers of Time (Zidormi). When you talk to her, she has the option "Show me Theramore before the destruction" and obviously when you click on it and fly back to the Theramore, the city is fixed like if no explosion happened.
So I was wondering, would you like it if this feature was added to all Azeroth? Traveling back and have the option to do old quests and see how was the world before Cataclysm? Would you prefer to do those quests than those post-Cataclysm? Will Blizzard be able to do it or would they have problems adding this new feature?
PD: I'm not talking about doing Vanilla servers, just adding this new feature to the current ones.