That uneven cubescape terrain is awesome. (and super brick-efficient)
I was never a fan of that super-chunky uneven terrain some people do (Anti-Block, Furdle), and I prefer 4x4 and 8x8 cube terrain, although when terrain is done in a grid I think it looks awful like Minecraft.
The walls in the warehouse shouldn't be built directly on top of eachother. Bricks don't go directly on top of eachother, they have a displaced overlap so it's more supportive. I know this isn't completely true with larger factory walls, but it looks a lot better and makes the build less repetitive.
This is awesome.