I think it would be a good idea to show efficiency tips or small details on how to play the game during loading screens. I feel like this would be especially useful as the factories get bigger and load times get longer.
I also believe that the game should put the player directly into a separate tutorial mode first, rather than allowing the player to open up any scenario and only showing mechanics when they’re selected. How will a new player know that a feature exists if he has never played the game before? I can say from my personal experience that it took several tries before figuring out how everything worked in the game.
There should be a menu somewhere which allows you to see all the stations in your factory and which ones have what upgrades. I can’t count how many times I’ve started a new assembly line in a factory and forgot to tick a box on one of the stations, only to find out by checking the dealer lot and seeing 90% of my cars missing a required option, then scrambling to find where I missed it.
In the building menu, I think that all parts manufacture should be in its own category, but in the same order as the building stations, rather than in sub menus with the related station. Personally, I think it would be easier to find things that way.
I’ll add more to this thread as I come across some things or come up with ideas.