This would not be a terrible idea if there would be no penalty for not doing rest/sex and I have attempted to make rest system in the earlier verisons. It didn't really worked because of 1. it requires significantly more attention from the player than simple 'set and forget' 2. manually taking care of it becomes a nightmare once your pool grows. The sex system could use some rework (or rather renaming if 'lust' and more uses for it), but making it more mandatory is not the approach I wanna take.