Games like that are also notorious, at least for me, where I constantly am like "ooh if I start a new game I can do X differently, I wonder what that'll be like..."
Haha, true. Though this time it might be to include 4 rails (2 each direction) and make the interchanges a little more efficient. Last time it was making a complete rail blueprint book chunk-aligned (along with my walls book). Definitely worth the effort!