I just hope rail system will allow us to "set" the speed of our "train" (maybe number of thrusters like on any other ship) and that they are 2-way travel systems with ability to turn when u connect 2 rail blocks (will it be blocks?) that are 90º rotated compared to each other. Rest should be fine no matter what they do (hopefully).
I want to make elevators and lookout posts (among simple transportation devices).