Technically there is a section of an underground train near the bank although it currently doesn't really serve any purpose. It does have chests that a few years ago had items inside dotted around the place that players had to find, but seeing it extended to cover a wider area would be cool.
To be honest though, tp-ing is the most efficient way to get literally anywhere
tpping is a best way to move, but it fails about really moving around (searching also other things..) and i said about a metro moving all the world even if someone (like me) doesn't now where are all places
This is an awesome idea!!! We do have railroads in the sewer systems but a real working subway sounds fabulous. However, since the subway has to big and it has to be made out of blocks so we can stand on it. Fabulous idea m8 but we will have to do some serious coding for this, and besides of subways, we have warps. Installing a subway system is kinda pointless, but it's an awesome idea