Hm... I can imagine...
Hey anyone see so-and-so?
They said they were taking the train to Classic
Damn, *rushes as fast as they can to the train station*
Mabye the transports(they don't exactly have to be trains) have certain schedules, and different classes in transportation. For example, instead of pumping a hand car you can buy a first class ticket on the nearest boat and go in style
It would stop players from calling most servers
"just a waste of space". Wow imagine grabbing the Zorbi Ring from Classic and being able to go under water in any other player world. It would take a lot of work though, but it'd be great.