TSW5 Free Roam Sandbox vs Free Roam in Timetable Which is Better

In Train Sim World we have a Free Roam feature which you can use in an empty sandbox where you place all the trains as your hearts desire but its kinda dead and takes a lot of effort to make it live. But wait, there's a better way you can Free Roam in among the normal Time Table so the world is alive already and you can still do just about whatever you want.