i think there should be teleporters that a player can set up so you don't have to walk back and forth to places that are a million miles away.
Teleporter stations would be handy, though I don't doubt they would take a deal of energy and be rather pricey or at least hard to craft.
They would be very useful, but having too many could possibly kill the fun of exploring for me. Possibly a set number per world would be good? At least difficult to make, referring to Eqlles' idea, would be good as well.
I really like the idea of teleporters. At this point I'm not sure how big the vertical dimension of a world are, so it would also help to commute to the bottom of a mine. I'm on board with Eqlles: Getting the teleporters should feel like quite an achievement and should be quite pricey so they don't become a spammable object you can place.
They would definitely need to be balanced with price, rare materials, and lots of R&D to create. Possibly have low tech elevators for that purpose, getting better and better finally getting to the really high tech quality teleporters.
