Ahh, I thought the game was playing tricks on me with the new sound. I thought I was hearing things differently, but I wasn't quite sure! Must have been a stealth update.
Yeah, I wouldn't worry about having to modify the stations in any way. That's what's great about seeing things evolve. Some will have to be modified drastically though to make it flow better. The one from my place to the lower floor of one of the stations, for example. With a little work, we likely wouldn't need two floors, unless we want to keep it that way. Some configurations make sense due to the direction the rails are in.