I've actually thought about this.
Remember that scene in Game of Thrones, where Tyrion and Bronn have to fight? Then Brawn is like, "now is the best time for a woman", after they've killed men. Killing and sex can mix, but the the world is civilized now. Most of us have lost that killer instinct because we're more civilized. We can't relate to how killing competing alpha males makes your dick hard, then you fuck and rape women, those days are OVER and I'm glad.
Let's say each country in the world was a warrior nation, and killing other males to win over the women was the norm. THEN it would make sense for wild life single player to have killing mixed with porn, but we're not savages anymore.
I can't relate to killing then being exposed to a sexual scenario. The killing is a turn off. Robbing a human or anthromoprh body of blood goes against the erotic nature of sex and reproduction; porn, erotica.
Skyrim + porn mods is a perfect example of what I"m talking about. You go and kill bandits, you kill dragons, then you go to the brothel and jerk off, but what if you don't want to cum then? You'll go and do main quests right? The main quests should have some erotic element, so during the whole time you're playing you're aroused from a level of 10% to 100% then back down to 10%, but the erotic stimulation your feeling should NEVER drop to 0%. This is an advanced concept that experienced porn game players will understand. That's what going to happen in Wild Life single player. You'll go from aroused to not-aroused, aroused to not aroused, when it should be going from strongly aroused to lightly aroused. (THIS IS GOLDEN INFORMATION, I'd never give this information out for free to anyone unless the game was so damn good).
ALso, if the devs did read this post and the one above, they could just keep these concepts in mind for their next game.