When you first move into town in New Leaf. There are barely any villagers, Nookling Junction barely has any room to walk around inside, almost all the stores downtown are abandoned and boarded up. Then you came along, downtown eventually getting tons of new stores, a salon, a nightclub, (where K.K Slider MC's nightly) Nookling Junction becoming a megamall, new stuff built like a lighthouse, a coffee shop, police station, cozy bridges, a bigger museum and redone town hall. Yeah, you changed a dull little burg into a bigger better place to enjoy. Aside from that, your character just being a good friend to the animals and planting trees and watering flowers. In other words: "You" are a crowning moment of awesome (Unless you play just to be a jerk) to the animals every time you play.