Great concept. I think it was a little rough but thats okay! It looked real cool.
1. Clicking on their bodies while they're sitting down does nothing, you have to click on their face which is very confusing. I guess the active area for that button should be bigger.
2. Lots of menu delays. I'm not sure what thats about and I haven't encountered it so severely before. I know very little of gamedev so unfortunately i can't say why its happening or how to fix it.
3. If the person leaves the train while you're in their menu, it kinda breaks. You can't exit the menu for some reason, but I can spam drop off until I have a bad day.
4. Sometimes I'll assume that if I click on someone elses head while in the menu, it could be a faster way to switch between characters. This isn't the case which is fine, but the clicking noise makes me think it is doing something and there is no feedback. It might be cool if you could do this or if the clicking noise could only happen when you've successfully clicked something.