@Conrod Spot on, buddy. As others have said, two weeks is too short, but I guess the actual frequency of wipes will depend on how quickly the survival world is "depleted". I too am worried that survival will become desolate, due to the constant threat of griefers, thieves, and what not. But we'll see.
With regards to the wipe, I've been ready for the wipe for some time now. While I did have further plans for my town, I'd rather have the T9K Minecraft veterans back than have a perfect town. Those who stuck it out in this world saw how even in the most challenging conditions, utopias can still be built, and a vibrant community and player-based economy can still develop. I believe this will be true for the creative building world.
Anyways, hope to see you guys in the next world soon. At least my specialty of 3-D sculptures will be more useful in creative.
EDIT: One thing I will miss are utilitarian builds. Farms, grinders, storage houses, shops, log stacking machines, railways and stations will have no place in the creative world since they have no real use.