this mod is essential to every server. it has a lot of brilliant features, like advtrains mapping, and all sorts of cool things. the inital render does lock the database, but after that, it is free to do what it likes. and you can view the server and explore it.
this mod is amazing. i have spent ~2 years poking it, coming from being an absolute noob to where i am (still kinda nooby). its very complex. it allows my mind to enjoy trains, without spending long hours at the local station, watching them fly by.