Yes, devs shown some dedication, but for me, their enthusiasm has dried long before they finished the game. So instead of fixing capacity check, they just thrown in mandatory cargo selection, and then jumped away. Since the main goal of any company is to make money, they can rise their enthusiasm with revenue from paid DLC.
About suggestions, let me explain. A huge amount of micromanagement would disappear, if my #1 suggestion is implemented (about modified old cargo system). #2, actually, don’t add any micromanagement for player, as it have to occur automatically. And #4 is a small step to realism, because in reality train just can’t reverse in dead-end, it just can move backwards. And it adds such a little thing as adding 1 additional station to the route, or building a small loop, what is not that hard. A player already is busy with lines, tunnels, bridges, lights, stations and junctions, and it just adds a one point – turning loops.