@asspirin I don't remember if it was in NOX too, I was going way back to floppy disk days though. It's also somewhat similar to several older RPGs which had limited data space, and solved the need to go back and forth by having a teleport that the player set, and having them overwrite it as needed.
I'm thinking it would have situational uses, but be limited somewhat by the restrictions. If it was something like a permanent portal, or if it could be used to shortcut with carts, it would be broken as all get out. Instead, maybe it could be used at a mine shared by a few smaller groups to send out a call for aid if there's a problem, as an example.
What else it could do, quite nicely, is help with things like sending friendlies across a town quickly. It could also be used by a spy to try to set up a quicker infiltration attempt. Etc. I doubt too many people would end up trying to use it as a trap, given that it's both obvious to see, and that there's relatively few times where that is the best choice for how to try to deal with a person who isn't working out in a group. Especially given the ability to die and join up with foes.
I also think that it could still be too strong depending upon group sizes and stuff, which means balance would have to remain a consideration. Things like limiting the number of uses more, having some larger preparation or cost, and limiting total distance might be involved in balancing that if needed.