I actually used ‘show/hide’ block a lot to make games, and stories. It’s because for the stories, the character did not always appear at the story, and for the games, if we kill something or someone, we need to make them disappear. However, I have not used ‘go-to-front/go-back-x-layers pairs’ block. For my perspective, this block could be used for car passing through road. This is because there would be some of the people in front of the car and beside the car.