I would like to give feedback about Niddertalbahn, as I believe it is fair. I have almost all German routes available (missing only Rapid Transit and Maintalbahn), if you like more slow Regio services than ICE (like me), this route is by far the best one. It became my favourite route. So I can only recommend it.
Absolutely agreed, fantastic and varied scenery and ambient sounds. It's stuff like this making me get out of the train and just enjoy the World.
Vegetation looks great, but that really shows how overdue TSW is for a water shader improvement. It drags down so many other routes.
This route have also one scenario that i call "horror theme" Glimpse into the future, for those who play it at first time after buyed the route feels little scary
My only comment is that the 642 should layer on to it. I know it’s an anachronism, but it’s really fun to drive on rural routes.