I'm still working on the next version, but there will be impassables that can only be passed by train...
I noticed you did that on Orient express. I think that is a great idea. I think on of them should either be the Ob, or Lena rivers.
These will probably go:
Blagov. (forgot the full name)
I agree when I was looking at this earlier, I was thinking that there were too many stations around Baikal.
Any way, maybe it's just me but I'm not really fond of the rectangles for the station. I think you should do this in the same style as the orient express. Especially, if it ends up being a map pack.