I believe what
MistahDeep means is that the canon story of the game has no NTR/sharing/swing. But if a large number of supporters want he can do something like the DEV of Power Vacuun, with the extras ntr "What if", nothing that will change the story of the original game. At least that's how I understood it.
But I also hope that a BBC of the walk doesn't show up to steal the MC's family because so far the MC seems like an ultra badass guy, who is cool kicking someone's ass to protect people, and I really like him the way it is being presented, always liked the anti-heroes more than the heroes themselves. So it doesn't make any sense for him to give up "his" girls for some idiot to have fun with them and won't stand by and watch them get taken away by anyone. If that happens the story totally forges off course so far shown.
But it all depends on the DEV, of course, it's not my story, it's just my opinion of what I understand so far.