One of the things I struggle with in thinking about a station is the length of a 5 to 8 car set. To me the building needs to be in proportion to that. There are several ideas on this forum kit-bashing MTH banks (using usually 3) into extraordinary stations.
Of course when we caught Amtrak out of Chemult Oregon, the station was little more than a long concrete pad and a couple of open air glass shelters. The train had to stop, move and stop again to handle the train length. Chemult Oregon Amtrak Stop fun trip