@crazyjoe579, @bluedevile - thanks for your comments. Shortcuts for joints? Maybe it can make sense.
As for natural disasters - they are needed for money balance. Maybe I will make railways taxes (every 10 years for every part) instead of often disasters.
Yes, screen (map) is fixed. I have thought that it brings a lot of problems to a player to keep several screens map under control. Just imagine IV generation trains and hysterical screen scrolling. It seams to be really frustrating. Maybe I should make factories smaller to bring more space for railways.
Thanks for your feedback guys! I think I will make RV2 with big map, several entrances for each factory, lower difficulty, and tutorial mode. Maybe story mode (levels with tasks) as well as free mode will be good. What you think?