World generation is definitely one of the most time-consuming bits, and Skycraft is nowhere near where I want it to be at this point. It'll get much better, and I'll keep experimenting with new ways to store the blocks instead of as pure voxels. But I think the chunks will be there in some form or another, as it's a very natural way to not have to send ALL the vertices of the world to the GPU each time you build a new block :)