I was throwing a few hours to godus and there is an annoyance that I have that if I have a city next to a cliff (the bottom) and I send the builders they get stuck on top, And this is my possible solution, an object (gift) that is a bridge that allows high cities to communicate with other levels of height, aesthetically it would look good, it would also create a second exit and entrance for the npc.
Translated with google translator :v