i think it would be really cool if there would be a small cutscene when the kids or neighbor wins so, here are ideas for how the cutscenes would go:
neighbor wins
he throws a mannequin of the kid who he catched last into the (for map 5 he would maybe throw them into a campfire) basement, where all of the other kids in mannequin form are also in, then he closes the basement door and locks it with a key, he then does a laugh and the screen fades to black and transitions into the neighbor wins screen.
kids win
the kids (only the ones that survived and reached the basement) run inside the basement. the neighbor then goes to the basement looking panicked as he sees that the door is open. the screen fades to black and transitions into the kids win screen.
time out
the sun rises (at daytime it would be a sunset and it would stop raining) and the kids (only ones that are alive) run away from the neighbor and climb up the fence, and run to nickys house (on map 5 it would just be the cutscene when the neighbor wins on that map, showing that the kids couldn't escape the park in time). it would then fade to black and transition into the neighbor wins screen.
guest wins
he would stuff the last kid that got caught into a big bag, and would leap away from the neighbors house/amusement park. it would then fade to black and transition into the neighbor wins screen.