I also want the developers to create a city based 3d map with underground metropolitian railway lines. include worldwide global cities and each state that is located within it.if you could add vehicles ( classic and modern ) where you can drive around that are either parked at the station or are found parked on the side of the road.you should also include where if you pass a red signal or boundary your points should be dedutcted in a fine you have to pay off at the station. add a ticket booth at each station where you can create ticket prices and the destination on the ticket stamp.add a terminal central station where all trains terminate which is either in the city or the end of line.add sound effects with overhead speakers and people moving on the station.you should also include a flagsman at each station who waves his flag ( either red or green depending on if the track is clear ) add underground subway systems with staircases where you can walk around as a train engineer or a platform conductor. add station police at the stations and also on the road seen driving at high speed if you accelate or break a rule within the railway.you should also be able to choose which teams to be on. either the roadside police,station gaurd,conductor,train engineer,track workers,signal box men,station porters or just a passenger. you should be able to walk around on the train ( either in the carriages or in the drivers cabin ) with interior 3d camera views that shows the number of passengers you pick up at each station and the seats grow full. there should be an icon that shows how many passengers you pick up at each station. please do consider including this.