Does anyone know why a unit must have full movement points in order to join a city? If a unit has at least one point left, I think that it should be able to join a city in that turn (instead of waiting another turn to get full movement points back). It should be another benefit of building roads, no? Is this an intended feature or a bug? If the former, what's the rationale behind it? Is the colonist using the rest of the movement points to build his or her home in the colony?