I don't even know why they have excessive blood and nudity to earn the M rating. They could have easily toned it down and made it suitable for a broader audience. PG-13 movies make more money because they don't restrict their audience like R rated movies. Seems games these days want to be more edgier?

My take on non-essentials is, if it doesn't seem like it will enhance the game in some meaningful way, resources can be used elsewhere to improve or polish other systems. I just don't think genitalia is necessary.