I would love to have Dutch trains in TSW, like the TRAXX, SNG, ICM and SLT, since I'm Dutch myself. And, of course, with good system depth, if possible. Like the ETCS with its modes, and ATB with its things. Only the TRAXX SNG, FLIRT, and the upcoming ICNG, have ETCS and ATB. All the other trains only have ATB, as far as I know.
I wish, as a Dutchman too, to have Dutch trains/routes as well in TSW. The problem is though that the NS (Dutch Railways for the people not familiar) isn't easy to get a license from. We have to wish for it though, and hopefully it will happen one day
I hope the NS realizes that there are a lot of fans who would really like it to drive their trains virtually, and also it is a sort of advertisement for the NS to have their brand in a game, so a double win situation
I also hope that they will have the announcements in TSW that you can find in the Sprinters (SGM, SLT, FLIRT and SNG).
It’s a triple win. NS gets a sort of advertisement, Dovetail gets money because the DLC costs money, and we (especially the Dutchmans) will be incredibly happy with the Dutch trains and routes!
I think the best route to start with will be from Watergraafsmeer - to Amsterdam C. - then to Schiphol - via Hogesnelheidslijn Zuid - to Rotterdam C.