Custom Blocks: Make your own within the game inside your workshop that you build. Go play that knock off game on the Xbox 360... Fortresscraft. Prime example on how to build your own custom blocks! That was awesome. So let's see the ability to make our own with this game.
Load up a texture pack you like. Go into your workshop, that you must build, and use all the blocks within that particular texture pack to create your very own block within a 8x8x8. Exit your workshop and now your new block is available. It's the same size as all the others, just with different little blocks within that one custom block.
Now I'm sure there will be limits on how you can create/use custom blocks, but the idea alone should get you thinking.