It looks great and I am very envious as I am still trying to work out a plan for the other side of that same hill, as I want to model the Union RR from Duquesne to Irvin works, and also Mifflin Jct/slag dumps.
There won't be a lot of room atop that hill, but perhaps a line of HO or N small brick homes from the back side for forced compression making it look taller. Other thoughts would be a flat showing a restaurant with large windows, representing Paulies Lookout or a very rustic ballfield as West Mifflin had a community playground right about with the Riverton bridge crossed the Mon. My grandparents lived on that same hilltop just over the border in Duquesne.
