Train Fever is not a bad product. There are performance problems and a few bad design/gameplay choices. However it is still one of the best train/transport games. Railroad Tycoons and Transport Tycoon (in part) might have better gameplay, but are now graphically outdated. Railroads was interesting, but it was even more bugged than TF and developers did not support it.
I think that what I regret the most about Urban Games (which by the way are to be applauded for the product they made and their ongoing support with many patches [I know that they should have released a more finished product, but at least they are patching it]) are that
1) many probably not so difficult modifications that would improve gameplay are not done (e.g. street over rail, X crossing, slower pace of time, articulated industry, editable maps, different “weight” of passenger and cargo wagons … there even is a post with hundreds of suggestions)
2) developers do not seem to care responding to these posts (even knowing that they plan to work – or not – on some elements would be better than indifference).
So please developers, show us that you care about our remarks and please try to benefit from them to improve the game.