Thoughts:
The new rails look very shiny and clean, I agree that the visuals pop more, but have lost some of their grime-core IMO
I love the directional arrows for rail segments, could long segments also have arrows mid way at regular intervals?
Designing rail blueprints was a lot of fun, I can ...

Halve the cost of landfill, make landfill usage on water create the new shallow marsh terrain, when landfill is placed on shallow marsh create solid ground. Peasy! Same quantity of stone to fill water as before, with option to allow bridge building without filling in water sources