If declining a postcard, rather than the Pikmin running away with it and returning (which is a long animation for many of us), how about the postcard just turning into the “glitter” (for lack of a better term) that we see around a big flower about to bloom? It wouldn’t take new animation, as the postcard disappeared already and the “glitter” falls briefly and is a current animation for the game. The last pikmin can just run off screen without needing to return. Just a thought.