Should be an achievable one to produce. 1980s saw the Glasgow to Edinburgh route given mk3 rolling stock and type 4 Class 47/7s. Allowed to run to 100mph with a DBSO driving open coach (mk2). Half hourly timetable for the above. The Class 101 (often spoken about negatively on here but it's a good drive) would be right at home also. They would often run services via the Falkirk Grahamston route. Class 37s saw use in the area but mainly on West Highland bound trains. Class 26 would be an absolute winner often on smaller freight and civil engineering type duties. 08 shunter could also be seen. I would strongly suggest including Stirling which gives a true Central Scotland network and even the line to Grangemouth. This would give and overall good mileage and great variety of operations. Back in MSTS days making tracks developed a route based on this concept. TS2021 also has one set in the First Scotrail era with Class 170s. The climb out of Glasgow Queen Street up Cowlairs Bank is one of the best for a driving challenge with the right (poor) conditions. I think this route would massively suit service mode. Fingers crossed its considered.