Hey dude, yes the Minecraft one is pretty awesome and has a lot of people working on it. I bet Moria would be really cool to map and explore.
We only have the vanilla textures at the moment in Outerra and biomes and textures are being developed right now. When they come online, expect to see a real visual leap forward again.
I'm having a tinker with Max at the moment and I see that World Machine 2.3 now supports preservation of georef info in bt formats for export and also dxf import so I think building the sites just got a whole lot easier.
Do you have any 3D modelling skills?
monks