This is a fantastic visual novel. The only thing I personally would like to see more of is the time between the MC and his wife. I'm thinking of everyday, wholesome things, romantic walks, a day at the beach, shopping together at the supermarket, trips to the zoo, or a scenic hot air balloon ride.
I know this is a porn game, and non-erotic scenes would have to be created in time that could be devoted to erotic scenes. But that would better emphasize the emotional bond between the MC and his wife. It would give these characters more life.
Just my two cents, I definitely don't mind the erotic scenes.