Alright, that was genuinely, a good game. I was honestly a bit hesitant to give this a shot given what I've seen from other games based around trains, but it delivered.
I do have a small issue with it, though I'm not exactly sure how it can be fixed. The currency generation feels a bit, uhm, wonky, maybe? It's hard to tell exactly what's going on. It sorta feels like there's just not enough generation? It gets a little worse when the second currency, research comes into the picture.
It isn't a huge issue, and I understand why the things are the way they are. It just feels a bit wonky.