I didn't even know this was something that happened...In one way, I'm looking forward to it and I like the idea...but on another...I like collecting stuff and exploring, so I hate time-limited content. I wish there was some way to actually see the 'ruins' even after the town was built up.

It could be through entering someones dream for some repeatable quests, or just a parallel world (warriors of darkness proved that world travel is technically possible).