I'm wondering what adding the additional three layers of underground content is going to do to harvesting. Whether they're going to spread the materials we have now, out over all 4 layers with the rarer being deeper, or if we're going to have all different crafting materials for each layer. It's already pretty tedious collecting mats, I couldn't imagine having to dig 2 or 3 levels down every time I need Adamantium. I guess that's where the auction house could come into play though.