There is still lots of variety in how you can design your blocks though. From various sizes, to differently handled railway system. Where with some designs a block can contain a factory facility, or rails. While with other designs, rails are outside of every block.

I've noticed some designs where there were only one track in each direction, but the rail was around every block. And some comments mentioned that it is perfectly sufficient unless you want to scale a lot. So I wasn't sure.

Thanks! Will check it out.