As far as you'd want I guess. Sure the most important premise would be to do games where we favor good actions. But it is also about erotism. I guess it will be very diferent from person to person how erotism and violence works out. I think that a story about a civilian trying to do right in a cataclysm desolated village is a great story but I can't find any room for erotism there. A bunch of mercenaries battling warlords in Africa, liberating innocent people from abuse and murderer makes a great story too. But I'd have some dificulties finding a place for erotism there too. On a more mundane scale, a guy falling in love for a girl finds out she is abused at home and tries to give her some hope and relief. Yeah, sounds good, but I'd find it hard to fantasise sexually on a girl that is abused in the story.
Those are hard examples I know. More soft one would be a swat brigade entirely made of sexy girls, that shoot vilains during the day and have wild sexy stories off work. Yeah, there would be violence there, but the kind we see in action movies and done in such a way we distantiate ouselves from the violent action (killing bad guys).
I do not say all the games must be without violence. That would takes us far from realism because violence exists in our world. The point is how we'd use violence in games and not compromise any erotism. I'd say violence has to play a secondary background part, and not be the main part.