Add some beautiful bridge-rails (wood, iron, stone-brick) that can be placed on water, and change default Big-electric-pole (now optional as Cargoships has it's own Floating Power poles) and rail-signals to be placeable on water.
I did eventually end up buying Space Age, but a way to do bridges without having to buy that DLC would be nice. No need for the fancy Elevated Rails, but just a way to put tracks on water without landfill. (Landfill blocks boats.)
There is also one other problem that recently occurred me the curved rails would need to be redone and I don't have the means to do that. Base game 2.0 changes the rails as well so no luck there.