This would be a nice addition. The Arlbergbahn-Railway from Feldkirch to Innsbruck with Railjet, Nightjet and Freight services. Including Locos like TAURUS, RH 1144, 1142, VECTRON, etc... It has very nice views and scenery and it's a quite difficult track...
A lovely Austrian mountain line with lots of curves, steep gradients and beautiful scenery. The single tracked sections and diverse traffic only add to the experience. I'd love to see something unique like this in TSW.
There are OBB Hccrrs ddm 915s freight Sekqrs & Laaers 560s attached to Nightjet trains on this route. These start at Feldkirch to Villach Graz & Wien Hbf. EN464/465 Wiener Waltzer needs to be double formation DB BR182 OBB 1116 locomotives due to steep grades on the route. If made one stands at Koln Hbf on SKA at 07:25 the Nightjet from this route becomes the 07:30 Koln 08:15 Aachen Trip since Innsbruck Hbf the end point of Arlbergbahn has a direct train to Aachen Hbf on SKA EN424/425.
This was one of my favourite routes in Train Simulator, especially with the awesome ÖBB 1144. Would love to see it in TSW.