I also don't see them choosing the best people to be happy, i assume some nice introverts get sent to other worlds, but i see just way too many assholes that don't respect or care about anyone but their harems which seem to be basically gold diggers anyways or anyone going with strong guys just because they will get power, unless the story will reveal their harems are genuine, here i could see that not being the case unlike every other harem story it's parodying.