Hi Charles and welcome to the the Swedish fora!
Regarding Swedish routes, you have som more at the Banbyggarna site:
http://www.banbyggarna.se/msts/Rutter.htm
- Greningebanan, a narrow track route from Pierre
- Djurgårdslingen, a tram route from Pierre
- Water, no land, just water...

Boats are best to run on this route.
- NEJ, a private company route from the north of Seden, by Pierre
- JBJ, as you know...
- GDSJ, se below
You can also test a very beatiful route from Hawk (the Swedish Hawk...

), called KMJ3, it is avaible at
www.train-sim.com and
www.the-train.de
Other routes down the road is:
*****
Trollhättan route by Totte:
http://217.197.57.186/forum/showthread.php?t=3417
*****
VHJ, but that route is currently not downloadable
*****
LLJ, a long-time project by me...

:
http://217.197.57.186/forum/showthread.php?t=883
*****
Södra Lidingöbanan by Pierre:
http://217.197.57.186/forum/showthread.php?t=8040
*****
JBJ2 by Hawk again:
http://217.197.57.186/forum/showthread.php?t=6787
Maybe I have missed some, but on the "Landskapsdesign - MSTS" you will find progress updates on routes:
http://217.197.57.186/forum/forumdisplay.php?f=13
I have also released GDSJ, aviable on Banbyggarna, however that route is intended for routebuilder as a start plate, with all tracks done and then populate the route with your own envirement and release it as your own route.
On Banbyggarna you also have some trains:
http://www.banbyggarna.se/msts.htm
A agree with you regarding wheatering the trains, that would be nice...
Regarding the tracks in JBJ, showed by Sinclar, it is not the track texture that is included in JBJ and I think also the trees are upgrades.