Look I know that this has most likely been requested a few times but I have a expansion idea so here it is Traincraft but with a few addons. 1).add back in overhead lines 2). the ability to run some on the trains on coal fuel and biofuel cells 3). and use fuel and oil added in by Buildcraft in some of the trains as well as add the ability to put fuel and oil into the tank carts 4).addon a car that are like mfsu carts but times bigger storage and use it like you would a hopper for a steam train.