I better write this in english, so you won't misunderstand my danish
I love your route. I think it is one of the best routes for MSTS, I put it as number 2 on my favorites list.
There are two things that I would love to see in this new version:
In the Kvarndalen area, which is the most "city-like" area, it would be great to see some kind of regional/city-train. My idea was to make a double-track line that starts perhaps 3 or 4 km south of Kvarndalen station, there you could make a starting station, you could call it Kvarndalen Syd or whatever
That station could be the starting-station for the city-train, and also the station where all the city-trains have workshop and depot.
Then the little double-track line connects with the mainline tracks, and stops at Kvarndalen station. Then it splits from the mainline tracks again and continues on it's own route, which could be around the little towns near Kvarndalen. Then perhaps it could meet the mainline again at one of the bigger stations on the route. I am not talking about a huge city network like in Stockholm!
Just a little local route with short distance between the stations. It dosn't have to be so long.
My second idea depends on where the KMJ route is supposed to be in Sweden?
Not many routes for MSTS have borders. It could be fun to have a border-station, so we could have international freight and passenger traffic between Norway and Sweden. You could perhaps make it a 3-track route, with 2 double-highspeed-tracks for X2000 and LINX and a single-track for freight trains. It dosn't have to be so long either. You could perhaps make most of this line in tunnel, so it won't get too big for the route (objects etc.)
Good luck with the route building!
I love trains!.