So, I've done the hard bits in getting the trains to interact and perform exactly as they should and it all works without any issues. I've had some AI running if the scenario to allow me to film various aspects of the scenario. Now, yards and sidings. What does one do to fill them up with an accurate reflection of the areas portrayed?
Bearing in mind I've recreated train running perfectly to how it ran on the day in question (including delays, platform changes), so I really do need it to feel like a current incarnation of the route - I don't want to resort to just sticking any old trucks and locos here and there.