search lights, locomotives, train cars (plz read for detail)

[Nercius]

in my growing community of people we are introducing to the game, a few comments continue to rise,

trains need to draw attention of alien life
stone/steel bridges over water
floodlight spotlights for on or around walls needing power for 90 degree directional illumination, occasionally swiveling to 135 degree total arc.
oil tanker cars (saw upcomming)
turreted locomotives, or a flatcar with a turret on it, in turn if laser, an energy storage car with recharge components to power turrets
locomotive stages: steam, slow coal only, water tower needs placement near loco, coal tender. diesel (current), fast (current) heavy oil conversion to diesel fuel (engine required fuel, no coal)
in addition to previous point, diesel needing to be made higher on tier, more difficult, early game is too easy, needs mid/late game

ty for your time