Giving pedestrians crosswalk lights is a very important light to have. Cross guards may sometimes not be available all the hours of the day. This is why cars have signal lights to tell them when to stop and go. People are the same way.
Giving people stop lights will help keep a ease in the streets. When one street of cars are moving the people in the same street should move as well. This would prevent people getting hit by cars, rushing to get to the other side of the street, and it’s just safer way for pedestrians to walk alongside the street.