Can you please add the highlighting when the tree/stone is selected, when the place to new rail segment is hovered and not not far to building.
Maybe the building radius and harvesting/mining radius bigger, based on the selected difficultly. I've clicked on trees too high and cannot see that something is wrong.
Maybe autoselecting nearby trees/rocks/area-to-building and just press the E or SPACE to do it. It will be nice to play just with keyboard, without the mouse AND/OR just with mouse without the keyboard.
Also first was not easy that I can take several woods/stones simultaneously, I've taken just one of each of them.